10-D 1 mal07001_10d-200705.txt UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C. 20549 FORM 10-D ASSET-BACKED ISSUER DISTRIBUTION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the monthly distribution period from: April 26, 2007 to May 25, 2007 Commission File Number of issuing entity: 333-130373-19 MASTR Alternative Loan Trust 2007-1 (Exact name of issuing entity as specified in its charter) Commission File Number of depositor: 333-130373 Mortgage Asset Securitization Transactions, Inc. (Exact name of depositor as specified in its charter) UBS Real Estate Securities Inc. (Exact name of sponsor as specified in its charter) New York (State or other jurisdiction of incorporation or organization of the issuing entity) 54-2198812 54-2198813 54-2198814 54-2198871 54-2198872 54-2198873 54-2198874 54-2198875 54-2198876 54-6737497 54-6737498 (I.R.S. Employer Identification No.) c/o Wells Fargo Bank, N.A. 9062 Old Annapolis Road Columbia, MD 21045 (Address of principal executive offices of the issuing entity) (Zip Code) (410) 884-2000 (Telephone number, including area code) Not Applicable (Former name, former address, if changed since last report) Registered/reporting pursuant to (check one) Title of Section Section Section Name of Exchange Class 12(b) 12(g) 15(d) (If Section 12(b)) 1-A-1 _____ _____ __X___ ____________ 1-A-2 _____ _____ __X___ ____________ 1-A-3 _____ _____ __X___ ____________ 1-A-4 _____ _____ __X___ ____________ 1-A-5 _____ _____ __X___ ____________ 1-A-6 _____ _____ __X___ ____________ 2-A-1 _____ _____ __X___ ____________ 2-A-2 _____ _____ __X___ ____________ 2-A-3 _____ _____ __X___ ____________ 2-A-4 _____ _____ __X___ ____________ 2-A-5 _____ _____ __X___ ____________ 2-A-6 _____ _____ __X___ ____________ 2-A-7 _____ _____ __X___ ____________ 2-A-8 _____ _____ __X___ ____________ 2-A-9 _____ _____ __X___ ____________ 2-A-10 _____ _____ __X___ ____________ 2-A-11 _____ _____ __X___ ____________ 2-A-12 _____ _____ __X___ ____________ 2-A-13 _____ _____ __X___ ____________ 2-A-14 _____ _____ __X___ ____________ 2-A-15 _____ _____ __X___ ____________ 3-A-1 _____ _____ __X___ ____________ 3-A-2 _____ _____ __X___ ____________ A-LR _____ _____ __X___ ____________ A-UR _____ _____ __X___ ____________ 15-PO _____ _____ __X___ ____________ 30-P0 _____ _____ __X___ ____________ 15-A-X _____ _____ __X___ ____________ 30-A-X _____ _____ __X___ ____________ B-1 _____ _____ __X___ ____________ B-2 _____ _____ __X___ ____________ B-3 _____ _____ __X___ ____________ B-4 _____ _____ __X___ ____________ B-5 _____ _____ __X___ ____________ B-6 _____ _____ __X___ ____________ P _____ _____ __X___ ____________

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes __X__ No ____ Part I - DISTRIBUTION INFORMATION Item 1. Distribution and Pool Performance Information On May 25, 2007 a distribution was made to holders of MASTR Alternative Loan Trust 2007-1. The distribution report is attached as an Exhibit to this Form 10-D. Please see Item 9(b), Exhibit 99.1 for the related information. Part II - OTHER INFORMATION Item 9. Exhibits. (a) The following is a list of documents filed as part of this Report on Form 10-D: (99.1) Monthly report distributed to holders of MASTR Alternative Loan Trust 2007-1, relating to the May 25, 2007 distribution. (b) The exhibits required to be filed by the Registrant pursuant to this Form are listed above and in the Exhibit Index that immediately follows the signature page hereof. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. MASTR Alternative Loan Trust 2007-1 (Issuing Entity) Wells Fargo Bank, N.A. (Master Servicer) /s/ Kelly Rentz Kelly Rentz, Officer Date: June 7, 2007 EXHIBIT INDEX Exhibit Number Description EX-99.1 Monthly report distributed to holders of MASTR Alternative Loan Trust 2007-1, relating to the May 25, 2007 distribution. EX-99.1 MASTR Alternative Loan Trust Mortgage Pass-Through Certificates Distribution Date: 5/25/2007 MASTR Alternative Loan Trust Mortgage Pass-Through Certificates Series 2007-1 Contact: Customer Service - CTSLink Wells Fargo Bank, N.A. Securities Administration Services 7485 New Horizon Way Frederick, MD 21703 www.ctslink.com Telephone: (301) 815-6600 Fax: (301) 815-6660

Certificateholder Distribution Summary Class CUSIP Record Certificate Beginning Interest Date Pass-Through Certificate Distribution Rate Balance 1-A-1 55275SAA8 0205/2324/2007 5.75000% 3938,~~104~~422,~~000~~873.0023 ~~192~~189,~~913~~044.0760 1-A-2 55275SAB6 0205/2324/2007 0.00000% 0.00 0.00 1-A-3 55275SAC4 0104/3130/2007 5.75000% 3938,~~104~~022,~~000~~962.0041 ~~187~~181,~~373~~992.3396 1-A-4 55275SAD2 0104/3130/2007 5.75000% 950,000.00 4,~~552~~547.08 1-A-5 55275SAE0 0104/3130/2007 5.75000% 15,000,000.00 71,~~875~~795.0094 1-A-6 55275SAF7 0104/3130/2007 5.75000% 4,789,000.00 22,~~947~~922.2905 2-A-1 55275SAG5 0104/3130/2007 6.50000% 2019,~~000~~269,~~000~~923.0055 ~~108~~104,~~333~~263.3394 2-A-2 55275SAH3 0104/3130/2007 6.00000% 3029,~~784~~333,~~000~~703.0012 ~~153~~146,~~920~~507.0019 2-A-3 55275SAJ9 0104/3130/2007 6.00000% 1,000,000.00 54,~~000~~994.0050 2-A-4 55275SAK6 0205/2324/2007 5.69000% 3836,~~274~~876,~~000~~852.0069 ~~181~~174,~~482~~665.5541 2-A-5 55275SAL4 0205/2324/2007 1.31000% 0.00 4341,~~371~~742.9271 2-A-6 55275SAM2 0104/3130/2007 6.00000% 7,946,000.00 39,~~730~~686.0030 2-A-7 55275SAN0 0104/3130/2007 6.00000% 3938,~~730~~279,~~000~~703.0012 ~~198~~191,~~650~~187.0099 2-A-8 55275SAP5 0104/3130/2007 7.00000% 3938,~~730~~279,~~000~~703.0012 ~~231~~223,~~758~~052.3365 2-A-9 55275SAQ3 0104/3130/2007 6.50000% 7976,~~460~~559,~~000~~406.0025 ~~430~~414,~~408~~240.3364 2-A-10 55275SBG4 0205/2324/2007 5.67000% 3938,~~730~~279,~~000~~703.0012 ~~187~~180,~~724~~672.2565 2-A-11 55275SBH2 0205/2324/2007 1.33000% 0.00 4442,~~034~~380.0800 2-A-12 55275SBJ8 0205/2324/2007 5.72000% 3938,~~730~~279,~~000~~703.0012 ~~189~~182,~~379~~265.6788 2-A-13 55275SBK5 0205/2324/2007 1.28000% 0.00 4240,~~378~~786.6777 2-A-14 55275SBL3 0205/2324/2007 5.69000% 1,~~456~~402,~~000~~850.0043 6,~~903~~644.8753 2-A-15 55275SBM1 0205/2324/2007 5.69000% 3938,~~730~~279,~~000~~703.0012 ~~188~~181,~~386~~309.4294 3-A-1 55275SAR1 0104/3130/2007 6.00000% 6963,~~532~~216,~~000~~010.0086 ~~347~~316,~~660~~080.0005 3-A-2 55275SAS9 0104/3130/2007 6.00000% 2,~~643~~402,~~000~~921.0020 1312,~~215~~014.0061 A-LR 55275SAT7 0104/3130/2007 6.00000% 500.00 0.3509 A-UR 55275SAU4 0104/3130/2007 6.00000% 500.00 0.2500 15-PO 55275SAV2 0104/3130/2007 0.00000% ~~403~~398,~~746~~941.7766 0.00 30-P0 55275SAW0 0104/3130/2007 0.00000% 1,~~417~~358,~~352~~886.0954 0.00 15-A-X 55275SAX8 0104/3130/2007 6.00000% 0.00 2018,~~028~~035.1311 30-A-X 55275SAY6 0104/3130/2007 6.50000% 0.00 2422,~~096~~616.9213 B-1 55275SAZ3 0104/3130/2007 6.~~09422~~09452% 4,~~531~~508,~~000~~821.0006 2322,~~010~~880.7664 B-2 55275SBA7 0104/3130/2007 6.~~09422~~09452% 2,~~265~~253,~~000~~912.0098 11,~~502~~437.8480 B-3 55275SBB5 0104/3130/2007 6.~~09422~~09452% 1,~~415~~408,~~000~~073.0067 7,~~186~~145.1047 B-4 55275SBC3 0104/3130/2007 6.~~09422~~09452% ~~991~~986,~~000~~149.0012 5,~~032~~004.8135 B-5 55275SBD1 0104/3130/2007 6.~~09422~~09452% ~~991~~986,~~000~~149.0012 5,~~032~~004.8135 B-6 55275SBE9 0104/3130/2007 6.~~09422~~09452% ~~567~~564,~~673~~894.6997 2,~~882~~866.9464 P 55275SBF6 0104/3130/2007 0.00000% 0.0100 0.00 Totals ~~561~~539,~~273~~056,~~872~~848.5646 2,~~990~~867,~~771~~788.1097

Certificateholder Distribution Summary (continued) Class Principal Current Ending Total Cumulative Distribution Realized Certificate Distribution Realized Loss Balance Losses 1-A-1 1605,~~000~~859.0094 0.00 3937,~~103~~817,~~000~~013.0029 ~~193~~794,~~913~~904.0754 0.00 1-A-2 0.00 0.00 0.00 0.00 0.00 1-A-3 ~~131~~475,~~037~~000.5900 0.00 3837,~~972~~547,962.41 ~~318~~656,~~410~~992.9296 0.00 1-A-4 0.00 0.00 950,000.00 4,~~552~~547.08 0.00 1-A-5 0.00 0.00 15,000,000.00 71,~~875~~795.0094 0.00 1-A-6 0.00 0.00 4,789,000.00 22,~~947~~922.2905 0.00 2-A-1 36471,~~777~~878.3959 0.00 1918,~~963~~798,~~222~~044.6196 ~~145~~576,~~110~~142.7253 0.00 2-A-2 73937,~~058~~386.2881 0.00 3028,~~710~~396,~~941~~316.7231 ~~226~~1,~~978~~083,894.2800 0.00 2-A-3 0.00 0.00 1,000,000.00 54,~~000~~994.0050 0.00 2-A-4 70903,~~380~~034.8905 0.00 3835,~~203~~973,~~619~~818.1164 ~~251~~1,~~863~~077,699.4446 0.00 2-A-5 0.00 0.00 0.00 4341,~~371~~742.9271 0.00 2-A-6 0.00 0.00 7,946,000.00 39,~~730~~686.0030 0.00 2-A-7 73937,~~058~~386.2881 0.00 3937,~~656~~342,~~941~~316.7231 ~~271~~1,~~708~~128,574.2880 0.00 2-A-8 73937,~~058~~386.2881 0.00 3937,~~656~~342,~~941~~316.7231 ~~304~~1,~~816~~160,439.6146 0.00 2-A-9 ~~146~~1,~~116~~874,773.5762 0.00 7974,~~313~~684,~~883~~632.4362 ~~576~~2,~~524~~289,014.9026 0.00 2-A-10 73937,~~058~~386.2881 0.00 3937,~~656~~342,~~941~~316.7231 ~~260~~1,~~782~~118,059.5346 0.00 2-A-11 0.00 0.00 0.00 4442,~~034~~380.0800 0.00 2-A-12 73937,~~058~~386.2881 0.00 3937,~~656~~342,~~941~~316.7231 ~~262~~1,~~437~~119,652.9569 0.00 2-A-13 0.00 0.00 0.00 4240,~~378~~786.6777 0.00 2-A-14 234,~~677~~352.3976 0.00 1,~~453~~368,~~322~~497.6167 940,~~581~~997.2629 0.00 2-A-15 73937,~~058~~386.2881 0.00 3937,~~656~~342,~~941~~316.7231 ~~261~~1,~~444~~118,696.7075 0.00 3-A-1 12,~~239~~744,~~584~~356.2230 0.00 6860,~~292~~471,~~415~~654.7856 13,~~587~~060,~~244~~436.2235 0.00 3-A-2 47104,~~118~~316.1848 0.00 2,~~595~~298,~~881~~604.8271 60116,~~333~~331.1809 0.00 A-LR 500.00 0.00 0.00 500.3509 0.00 A-UR 500.00 0.00 0.00 500.2500 0.00 15-PO 1,~~594~~617.0217 0.00 ~~402~~397,~~152~~324.7549 1,~~594~~617.0217 0.00 30-P0 2,~~181~~157.3129 0.00 1,~~415~~356,~~170~~729.7824 2,~~181~~157.3129 0.00 15-A-X 0.00 0.00 0.00 2018,~~028~~035.1311 0.00 30-A-X 0.00 0.00 0.00 2422,~~096~~616.9213 0.00 B-1 7,~~333~~503.8296 0.00 4,~~523~~501,~~666~~317.1810 30,~~344~~384.5860 0.00 B-2 3,~~666~~751.1015 0.00 2,~~261~~250,~~333~~161.9083 15,~~168~~188.9495 0.00 B-3 2,~~290~~343.3043 0.00 1,~~412~~405,~~709~~730.7024 9,~~476~~488.4090 0.00 B-4 1,~~604~~641.0223 0.00 ~~989~~984,~~395~~507.9889 6,~~636~~645.8358 0.00 B-5 1,~~604~~641.0223 0.00 ~~989~~984,~~395~~507.9889 6,~~636~~645.8358 0.00 B-6 ~~918~~940.8315 0.00 ~~566~~563,~~754~~954.8682 3,~~801~~806.7779 0.00 P 0.00 0.0100 0.00 0.00 0.01 Totals 212,~~134~~859,~~334~~488.3321 0.0100 ~~559~~526,~~139~~197,~~538~~360.22 515,~~125~~727,~~105~~277.4318 0.01 As Master Servicer, Wells Fargo Bank, N.A. has independently calculated collateral information based on loan level data received from external parties, which may include the Servicers, Issuer and other parties to the transaction. Wells Fargo Bank, N.A. expressly disclaims any responsibility for the accuracy or completeness of information furnished to it by those third parties. All Record Dates are based upon the governing documents and logic set forth as of closing. NOTE: Exchangeable Certificates are Class 2-A-7, 2-A-8, 2-A-9, 2-A-10, 2-A-11, 2-A-12, 2-A-13, & 2-A-15 Certificates.

Principal Distribution Statement Class Original Beginning Scheduled UnScheduled Accretion Realized Face Certificate Principal Principal Loss Amount Balance Distribution Distribution 1-A-1 39,104,000.00 3938,~~104~~422,~~000~~873.0023 ~~738~~54,689.0266 ~~261~~551,170.9828 0.00 0.00 1-A-2 0.00 0.00 0.00 0.00 0.00 0.00 1-A-3 39,104,000.00 3938,~~104~~022,~~000~~962.0041 9642,~~708~~877.2922 34432,~~329~~122.3178 0.00 0.00 1-A-4 950,000.00 950,000.00 0.00 0.00 0.00 0.00 1-A-5 15,000,000.00 15,000,000.00 0.00 0.00 0.00 0.00 1-A-6 4,789,000.00 4,789,000.00 0.00 0.00 0.00 0.00 2-A-1 20,000,000.00 2019,~~000~~269,~~000~~923.0055 15,~~428~~276.4351 21456,~~348~~602.9607 0.00 0.00 2-A-2 30,784,000.00 3029,~~784~~333,~~000~~703.0012 30,~~648~~346.5779 42907,~~409~~040.7102 0.00 0.00 2-A-3 1,000,000.00 1,000,000.00 0.00 0.00 0.00 0.00 2-A-4 38,274,000.00 3836,~~274~~876,~~000~~852.0069 29,~~525~~234.3866 40873,~~855~~799.5139 0.00 0.00 2-A-5 0.00 0.00 0.00 0.00 0.00 0.00 2-A-6 7,946,000.00 7,946,000.00 0.00 0.00 0.00 0.00 2-A-7 39,730,000.00 3938,~~730~~279,~~000~~703.0012 2066,~~659~~011.8267 52871,~~398~~375.4714 0.00 0.00 2-A-8 39,730,000.00 3938,~~730~~279,~~000~~703.0012 2066,~~659~~011.8267 52871,~~398~~375.4714 0.00 0.00 2-A-9 79,460,000.00 7976,~~460~~559,~~000~~406.0025 41132,~~319~~023.6434 ~~104~~1,~~796~~742,750.9329 0.00 0.00 2-A-10 39,730,000.00 3938,~~730~~279,~~000~~703.0012 2066,~~659~~011.8267 52871,~~398~~375.4714 0.00 0.00 2-A-11 0.00 0.00 0.00 0.00 0.00 0.00 2-A-12 39,730,000.00 3938,~~730~~279,~~000~~703.0012 2066,~~659~~011.8267 52871,~~398~~375.4714 0.00 0.00 2-A-13 0.00 0.00 0.00 0.00 0.00 0.00 2-A-14 1,456,000.00 1,~~456~~402,~~000~~850.0043 1,~~123~~112.1913 133,~~554~~240.2063 0.00 0.00 2-A-15 39,730,000.00 3938,~~730~~279,~~000~~703.0012 2066,~~659~~011.8267 52871,~~398~~375.4714 0.00 0.00 3-A-1 69,532,000.00 6963,~~532~~216,~~000~~010.0086 ~~254~~239,~~288~~663.6463 ~~985~~2,~~295~~504,692.5867 0.00 0.00 3-A-2 2,643,000.00 2,~~643~~402,~~000~~921.0020 9,~~665~~109.8492 3795,~~452~~206.3456 0.00 0.00 A-LR 50.00 500.00 100.2600 390.7400 0.00 0.00 A-UR 50.00 500.00 100.2600 390.7400 0.00 0.00 15-PO 403,746.77 ~~403~~398,~~746~~941.7766 1,~~594~~617.0214 0.0003 0.00 0.00 30-P0 1,417,352.09 1,~~417~~358,~~352~~886.0954 1,~~781~~746.9386 ~~399~~410.3843 0.00 0.00 15-A-X 0.00 0.00 0.00 0.00 0.00 0.00 30-A-X 0.00 0.00 0.00 0.00 0.00 0.00 B-1 4,531,000.00 4,~~531~~508,~~000~~821.0006 7,~~333~~503.8296 0.00 0.00 0.00 B-2 2,265,000.00 2,~~265~~253,~~000~~912.0098 3,~~666~~751.1015 0.00 0.00 0.00 B-3 1,415,000.00 1,~~415~~408,~~000~~073.0067 2,~~290~~343.3043 0.00 0.00 0.00 B-4 991,000.00 ~~991~~986,~~000~~149.0012 1,~~604~~641.0223 0.00 0.00 0.00 B-5 991,000.00 ~~991~~986,~~000~~149.0012 1,~~604~~641.0223 0.00 0.00 0.00 B-6 567,673.69 ~~567~~564,~~673~~894.6997 ~~918~~940.8315 0.00 0.00 0.00 P 0.01 0.0100 0.00 0.00 0.00 0.0100 Totals 561,273,872.56 ~~561~~539,~~273~~056,~~872~~848.5646 ~~603~~905,~~558~~577.6636 111,~~530~~953,~~775~~910.7385 0.00 0.0100

Principal Distribution Statement (continued) Class Total Ending Ending Total Principal Certificate Certificate Principal Reduction Balance Percentage Distribution 1-A-1 1605,~~000~~859.0094 3937,~~103~~817,~~000~~013.0029 0.~~99997443~~96708811 1605,~~000~~859.0094 1-A-2 0.00 0.00 0.00000000 0.00 1-A-3 ~~131~~475,~~037~~000.5900 3837,~~972~~547,962.41 0.~~99664900~~96020771 ~~131~~475,~~037~~000.5900 1-A-4 0.00 950,000.00 1.00000000 0.00 1-A-5 0.00 15,000,000.00 1.00000000 0.00 1-A-6 0.00 4,789,000.00 1.00000000 0.00 2-A-1 36471,~~777~~878.3959 1918,~~963~~798,~~222~~044.6196 0.~~99816113~~93990225 36471,~~777~~878.3959 2-A-2 73937,~~058~~386.2881 3028,~~710~~396,~~941~~316.7231 0.~~99762675~~92243751 73937,~~058~~386.2881 2-A-3 0.00 1,000,000.00 1.00000000 0.00 2-A-4 70903,~~380~~034.8905 3835,~~203~~973,~~619~~818.1164 0.~~99816113~~93990225 70903,~~380~~034.8905 2-A-5 0.00 0.00 0.00000000 0.00 2-A-6 0.00 7,946,000.00 1.00000000 0.00 2-A-7 73937,~~058~~386.2881 3937,~~656~~342,~~941~~316.7231 0.~~99816113~~93990225 73937,~~058~~386.2881 2-A-8 73937,~~058~~386.2881 3937,~~656~~342,~~941~~316.7231 0.~~99816113~~93990225 73937,~~058~~386.2881 2-A-9 ~~146~~1,~~116~~874,773.5762 7974,~~313~~684,~~883~~632.4362 0.~~99816113~~93990225 ~~146~~1,~~116~~874,773.5762 2-A-10 73937,~~058~~386.2881 3937,~~656~~342,~~941~~316.7231 0.~~99816113~~93990225 73937,~~058~~386.2881 2-A-11 0.00 0.00 0.00000000 0.00 2-A-12 73937,~~058~~386.2881 3937,~~656~~342,~~941~~316.7231 0.~~99816113~~93990225 73937,~~058~~386.2881 2-A-13 0.00 0.00 0.00000000 0.00 2-A-14 234,~~677~~352.3976 1,~~453~~368,~~322~~497.6167 0.~~99816113~~93990225 234,~~677~~352.3976 2-A-15 73937,~~058~~386.2881 3937,~~656~~342,~~941~~316.7231 0.~~99816113~~93990225 73937,~~058~~386.2881 3-A-1 12,~~239~~744,~~584~~356.2230 6860,~~292~~471,~~415~~654.7856 0.~~98217246~~86969531 12,~~239~~744,~~584~~356.2230 3-A-2 47104,~~118~~316.1848 2,~~595~~298,~~881~~604.8271 0.~~98217246~~86969531 47104,~~118~~316.1848 A-LR 500.00 0.00 0.00000000 500.00 A-UR 500.00 0.00 0.00000000 500.00 15-PO 1,~~594~~617.0217 ~~402~~397,~~152~~324.7549 0.~~99605193~~98409330 1,~~594~~617.0217 30-P0 2,~~181~~157.3129 1,~~415~~356,~~170~~729.7824 0.~~99846100~~95722809 2,~~181~~157.3129 15-A-X 0.00 0.00 0.00000000 0.00 30-A-X 0.00 0.00 0.00000000 0.00 B-1 7,~~333~~503.8296 4,~~523~~501,~~666~~317.1810 0.~~99838141~~99344893 7,~~333~~503.8296 B-2 3,~~666~~751.1015 2,~~261~~250,~~333~~161.9083 0.~~99838141~~99344893 3,~~666~~751.1015 B-3 2,~~290~~343.3043 1,~~412~~405,~~709~~730.7024 0.~~99838141~~99344893 2,~~290~~343.3043 B-4 1,~~604~~641.0223 ~~989~~984,~~395~~507.9889 0.~~99838141~~99344893 1,~~604~~641.0223 B-5 1,~~604~~641.0223 ~~989~~984,~~395~~507.9889 0.~~99838141~~99344893 1,~~604~~641.0223 B-6 ~~918~~940.8315 ~~566~~563,~~754~~954.8682 0.~~99838141~~99344893 ~~918~~940.8315 P 0.0100 0.00 0.00000000 0.00 Totals 212,~~134~~859,~~334~~488.3421 ~~559~~526,~~139~~197,~~538~~360.22 0.~~99619734~~93750553 212,~~134~~859,~~334~~488.3321

Principal Distribution Factors Statement Class Original Beginning Scheduled UnScheduled Accretion Face Certificate Principal Principal Amount Balance Distribution Distribution 1-A-1 39,104,000.00 ~~1000~~982.~~00000000~~58165993 01.~~01887326~~39856946 014.~~00669957~~09498466 0.00000000 1-A-2 0.00 0.00000000 0.00000000 0.00000000 0.00000000 1-A-3 39,104,000.00 ~~1000~~972.~~00000000~~35480795 21.~~47310480~~09649192 011.~~87789766~~05060301 0.00000000 1-A-4 950,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 1-A-5 15,000,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 1-A-6 4,789,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 2-A-1 20,000,000.00 ~~1000~~963.~~00000000~~49617750 0.~~77142150~~76382550 122.~~06744800~~83010350 0.00000000 2-A-2 30,784,000.00 ~~1000~~952.~~00000000~~88796518 0.~~99560064~~98579749 129.~~37765430~~46465761 0.00000000 2-A-3 1,000,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 2-A-4 38,274,000.00 ~~1000~~963.~~00000000~~49617730 0.~~77142133~~76382557 122.~~06744814~~83010373 0.00000000 2-A-5 0.00 0.00000000 0.00000000 0.00000000 0.00000000 2-A-6 7,946,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 2-A-7 39,730,000.00 ~~1000~~963.~~00000000~~49617720 01.~~52000554~~66150692 121.~~31886408~~93242235 0.00000000 2-A-8 39,730,000.00 ~~1000~~963.~~00000000~~49617720 01.~~52000554~~66150692 121.~~31886408~~93242235 0.00000000 2-A-9 79,460,000.00 ~~1000~~963.~~00000000~~49617732 01.~~52000554~~66150692 121.~~31886396~~93242248 0.00000000 2-A-10 39,730,000.00 ~~1000~~963.~~00000000~~49617720 01.~~52000554~~66150692 121.~~31886408~~93242235 0.00000000 2-A-11 0.00 0.00000000 0.00000000 0.00000000 0.00000000 2-A-12 39,730,000.00 ~~1000~~963.~~00000000~~49617720 01.~~52000554~~66150692 121.~~31886408~~93242235 0.00000000 2-A-13 0.00 0.00000000 0.00000000 0.00000000 0.00000000 2-A-14 1,456,000.00 ~~1000~~963.~~00000000~~49617445 0.~~77142170~~76382555 122.~~06744505~~83010302 0.00000000 2-A-15 39,730,000.00 ~~1000~~963.~~00000000~~49617720 01.~~52000554~~66150692 121.~~31886408~~93242235 0.00000000 3-A-1 69,532,000.00 ~~1000~~909.~~00000000~~16428206 3.~~65714549~~44681053 1436.~~17039032~~02215771 0.00000000 3-A-2 2,643,000.00 ~~1000~~909.~~00000000~~16428301 3.~~65714718~~44681044 1436.~~17038971~~02215664 0.00000000 A-LR 50.00 ~~1000~~0.00000000 ~~205~~0.~~20000000~~00000000 ~~794~~0.~~80000000~~00000000 0.00000000 A-UR 50.00 ~~1000~~0.00000000 ~~205~~0.~~20000000~~00000000 ~~794~~0.~~80000000~~00000000 0.00000000 15-PO 403,746.77 ~~1000~~988.~~00000000~~09870355 34.~~94806874~~00533235 0.~~00000000~~00007430 0.00000000 30-P0 1,417,352.09 ~~1000~~958.~~00000000~~75015784 1.~~25722466~~23248134 0.~~28177896~~28957519 0.00000000 15-A-X 0.00 0.00000000 0.00000000 0.00000000 0.00000000 30-A-X 0.00 0.00000000 0.00000000 0.00000000 0.00000000 B-1 4,531,000.00 ~~1000~~995.~~00000000~~10506731 1.~~61858751~~65613772 0.00000000 0.00000000 B-2 2,265,000.00 ~~1000~~995.~~00000000~~10506843 1.~~61858720~~65613687 0.00000000 0.00000000 B-3 1,415,000.00 ~~1000~~995.~~00000000~~10506714 1.~~61858657~~65613428 0.00000000 0.00000000 B-4 991,000.00 ~~1000~~995.~~00000000~~10506559 1.~~61858729~~65613522 0.00000000 0.00000000 B-5 991,000.00 ~~1000~~995.~~00000000~~10506559 1.~~61858729~~65613522 0.00000000 0.00000000 B-6 567,673.69 ~~1000~~995.~~00000000~~10507524 1.~~61858831~~65614510 0.00000000 0.00000000 P 0.01 0.00000000 0.00000000 0.00000000 0.00000000

Principal Distribution Factors Statement (continued) Class Realized Total Ending Ending Total Loss Principal Certificate Certificate Principal Reduction Balance Percentage Distribution 1-A-1 0.00000000 015.~~02557283~~49355411 ~~999~~967.~~97442717~~08810582 0.~~99997443~~96708811 015.~~02557283~~49355411 1-A-2 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 1-A-3 0.00000000 312.~~35100220~~14709493 ~~996~~960.~~64899780~~20771302 0.~~99664900~~96020771 312.~~35100220~~14709493 1-A-4 0.00000000 0.00000000 1000.00000000 1.00000000 0.00000000 1-A-5 0.00000000 0.00000000 1000.00000000 1.00000000 0.00000000 1-A-6 0.00000000 0.00000000 1000.00000000 1.00000000 0.00000000 2-A-1 0.00000000 123.~~83886950~~59392950 ~~998~~939.~~16113050~~90224800 0.~~99816113~~93990225 123.~~83886950~~59392950 2-A-2 0.00000000 230.~~37325494~~45045511 ~~997~~922.~~62674506~~43751007 0.~~99762675~~92243751 230.~~37325494~~45045511 2-A-3 0.00000000 0.00000000 1000.00000000 1.00000000 0.00000000 2-A-4 0.00000000 123.~~83886947~~59392930 ~~998~~939.~~16113053~~90224800 0.~~99816113~~93990225 123.~~83886947~~59392930 2-A-5 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 2-A-6 0.00000000 0.00000000 1000.00000000 1.00000000 0.00000000 2-A-7 0.00000000 123.~~83886937~~59392927 ~~998~~939.~~16113063~~90224792 0.~~99816113~~93990225 123.~~83886937~~59392927 2-A-8 0.00000000 123.~~83886937~~59392927 ~~998~~939.~~16113063~~90224792 0.~~99816113~~93990225 123.~~83886937~~59392927 2-A-9 0.00000000 123.~~83886949~~59392927 ~~998~~939.~~16113051~~90224792 0.~~99816113~~93990225 123.~~83886949~~59392927 2-A-10 0.00000000 123.~~83886937~~59392927 ~~998~~939.~~16113063~~90224792 0.~~99816113~~93990225 123.~~83886937~~59392927 2-A-11 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 2-A-12 0.00000000 123.~~83886937~~59392927 ~~998~~939.~~16113063~~90224792 0.~~99816113~~93990225 123.~~83886937~~59392927 2-A-13 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 2-A-14 0.00000000 123.~~83886676~~59392857 ~~998~~939.~~16113324~~90224588 0.~~99816113~~93990225 123.~~83886676~~59392857 2-A-15 0.00000000 123.~~83886937~~59392927 ~~998~~939.~~16113063~~90224792 0.~~99816113~~93990225 123.~~83886937~~59392927 3-A-1 0.00000000 1739.~~82753581~~46896824 ~~982~~869.~~17246419~~69531381 0.~~98217246~~86969531 1739.~~82753581~~46896824 3-A-2 0.00000000 1739.~~82753689~~46896708 ~~982~~869.~~17246311~~69531215 0.~~98217246~~86969531 1739.~~82753689~~46896708 A-LR 0.00000000 ~~1000~~0.00000000 0.00000000 0.00000000 ~~1000~~0.00000000 A-UR 0.00000000 ~~1000~~0.00000000 0.00000000 0.00000000 ~~1000~~0.00000000 15-PO 0.00000000 34.~~94806874~~00540666 ~~996~~984.~~05193126~~09329689 0.~~99605193~~98409330 34.~~94806874~~00540666 30-P0 0.00000000 1.~~53900362~~52205653 ~~998~~957.~~46099638~~22809426 0.~~99846100~~95722809 1.~~53900362~~52205653 15-A-X 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 30-A-X 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 B-1 0.00000000 1.~~61858751~~65613772 ~~998~~993.~~38141249~~44892960 0.~~99838141~~99344893 1.~~61858751~~65613772 B-2 0.00000000 1.~~61858720~~65613687 ~~998~~993.~~38141280~~44893157 0.~~99838141~~99344893 1.~~61858720~~65613687 B-3 0.00000000 1.~~61858657~~65613428 ~~998~~993.~~38141343~~44893286 0.~~99838141~~99344893 1.~~61858657~~65613428 B-4 0.00000000 1.~~61858729~~65613522 ~~998~~993.~~38141271~~44893037 0.~~99838141~~99344893 1.~~61858729~~65613522 B-5 0.00000000 1.~~61858729~~65613522 ~~998~~993.~~38141271~~44893037 0.~~99838141~~99344893 1.~~61858729~~65613522 B-6 0.00000000 1.~~61858831~~65614510 ~~998~~993.~~38141169~~44893014 0.~~99838141~~99344893 1.~~61858831~~65614510 P 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 NOTE: All classes per $1,000 denomination.

Interest Distribution Statement Class Accrual Accrual Current Beginning Current Payment of Dates Days Certificate Certificate/ Accrued Unpaid Interest Rate Notional Interest Shortfall (1) Balance 1-A-1 0104/25/07 - 0205/24/07 30 5.75000% 3938,~~104~~422,~~000~~873.0023 ~~187~~184,~~373~~109.3360 0.00 1-A-2 N/A N/A 0.00000% 3938,~~104~~422,~~000~~873.0023 0.00 0.00 1-A-3 0104/01/07 - 0104/30/07 30 5.75000% 3938,~~104~~022,~~000~~962.0041 ~~187~~182,~~373~~193.3336 0.00 1-A-4 0104/01/07 - 0104/30/07 30 5.75000% 950,000.00 4,552.08 0.00 1-A-5 0104/01/07 - 0104/30/07 30 5.75000% 15,000,000.00 71,875.00 0.00 1-A-6 0104/01/07 - 0104/30/07 30 5.75000% 4,789,000.00 22,947.29 0.00 2-A-1 0104/01/07 - 0104/30/07 30 6.50000% 2019,~~000~~269,~~000~~923.0055 ~~108~~104,~~333~~378.3375 0.00 2-A-2 0104/01/07 - 0104/30/07 30 6.00000% 3029,~~784~~333,~~000~~703.0012 ~~153~~146,~~920~~668.0052 0.00 2-A-3 0104/01/07 - 0104/30/07 30 6.00000% 1,000,000.00 5,000.00 0.00 2-A-4 0104/25/07 - 0205/24/07 30 5.69000% 3836,~~274~~876,~~000~~852.0069 ~~181~~174,~~482~~857.5574 0.00 2-A-5 0104/25/07 - 0205/24/07 30 1.31000% 3938,~~730~~279,~~000~~703.0012 4341,~~371~~788.9268 0.00 2-A-6 0104/01/07 - 0104/30/07 30 6.00000% 7,946,000.00 39,730.00 0.00 2-A-7 0104/01/07 - 0104/30/07 30 6.00000% 3938,~~730~~279,~~000~~703.0012 ~~198~~191,~~650~~398.0052 0.00 2-A-8 0104/01/07 - 0104/30/07 30 7.00000% 3938,~~730~~279,~~000~~703.0012 ~~231~~223,~~758~~298.3327 0.00 2-A-9 0104/01/07 - 0104/30/07 30 6.50000% 7976,~~460~~559,~~000~~406.0025 ~~430~~414,~~408~~696.3378 0.00 2-A-10 0104/25/07 - 0205/24/07 30 5.67000% 3938,~~730~~279,~~000~~703.0012 ~~187~~180,~~724~~871.2560 0.00 2-A-11 0104/25/07 - 0205/24/07 30 1.33000% 3938,~~730~~279,~~000~~703.0012 4442,~~034~~426.0867 0.00 2-A-12 0104/25/07 - 0205/24/07 30 5.72000% 3938,~~730~~279,~~000~~703.0012 ~~189~~182,~~379~~466.6758 0.00 2-A-13 0104/25/07 - 0205/24/07 30 1.28000% 3938,~~730~~279,~~000~~703.0012 4240,~~378~~831.6768 0.00 2-A-14 0104/25/07 - 0205/24/07 30 5.69000% 1,~~456~~402,~~000~~850.0043 6,~~903~~651.8785 0.00 2-A-15 0104/25/07 - 0205/24/07 30 5.69000% 3938,~~730~~279,~~000~~703.0012 ~~188~~181,~~386~~509.4259 0.00 3-A-1 0104/01/07 - 0104/30/07 30 6.00000% 6963,~~532~~216,~~000~~010.0086 ~~347~~316,~~660~~080.0005 0.00 3-A-2 0104/01/07 - 0104/30/07 30 6.00000% 2,~~643~~402,~~000~~921.0020 1312,~~215~~014.0061 0.00 A-LR 01N/~~01/07~~A ~~- 01~~N/~~30/07~~A 30 6.00000% 500.00 0.2500 0.00 A-UR 01N/~~01/07~~A ~~- 01~~N/~~30/07~~A 30 6.00000% 500.00 0.2500 0.00 15-PO N/A N/A 0.00000% ~~403~~398,~~746~~941.7766 0.00 0.00 30-P0 N/A N/A 0.00000% 1,~~417~~358,~~352~~886.0954 0.00 0.00 15-A-X 0104/01/07 - 0104/30/07 30 6.00000% 43,~~005~~607,~~625~~022.9793 2018,~~028~~035.1311 0.00 30-A-X 0104/01/07 - 0104/30/07 30 6.50000% 4,~~448~~179,~~662~~883.1833 2422,~~096~~641.9203 0.00 B-1 0104/01/07 - 0104/30/07 30 6.~~09422~~09452% 4,~~531~~508,~~000~~821.0006 2322,~~010~~899.7626 0.00 B-2 0104/01/07 - 0104/30/07 30 6.~~09422~~09452% 2,~~265~~253,~~000~~912.0098 11,~~502~~447.8410 0.00 B-3 0104/01/07 - 0104/30/07 30 6.~~09422~~09452% 1,~~415~~408,~~000~~073.0067 7,~~186~~151.1028 0.00 B-4 0104/01/07 - 0104/30/07 30 6.~~09422~~09452% ~~991~~986,~~000~~149.0012 5,~~032~~008.8142 0.00 B-5 0104/01/07 - 0104/30/07 30 6.~~09422~~09452% ~~991~~986,~~000~~149.0012 5,~~032~~008.8142 0.00 B-6 0104/01/07 - 0104/30/07 30 6.~~09422~~09452% ~~567~~564,~~673~~894.6997 2,~~882~~868.9497 0.00 P N/A N/A 0.00000% 0.0100 0.00 0.00 Totals 2,~~985~~865,~~231~~406.2681 0.00

Interest Distribution Statement (continued) Class Current Non-Supported Total Remaining Ending Interest Interest Interest Unpaid Interest Certificate/ Shortfall(1) Shortfall Distribution Shortfall(1) Notional Balance 1-A-1 0.00 0.00 ~~192~~189,~~913~~044.0760 0.00 3937,~~103~~817,~~000~~013.0029 1-A-2 0.00 0.00 0.00 0.00 3937,~~103~~817,~~000~~013.0029 1-A-3 0.00 0200.0040 ~~187~~181,~~373~~992.3396 0.00 3837,~~972~~547,962.41 1-A-4 0.00 05.0001 4,~~552~~547.08 0.00 950,000.00 1-A-5 0.00 079.0006 71,~~875~~795.0094 0.00 15,000,000.00 1-A-6 0.00 025.0024 22,~~947~~922.2905 0.00 4,789,000.00 2-A-1 0.00 0114.0081 ~~108~~104,~~333~~263.3394 0.00 1918,~~963~~798,~~222~~044.6196 2-A-2 0.00 0161.0033 ~~153~~146,~~920~~507.0019 0.00 3028,~~710~~396,~~941~~316.7231 2-A-3 0.00 05.0050 54,~~000~~994.0050 0.00 1,000,000.00 2-A-4 0.00 0192.0033 ~~181~~174,~~482~~665.5541 0.00 3835,~~203~~973,~~619~~818.1164 2-A-5 0.00 045.0097 4341,~~371~~742.9271 0.00 3937,~~656~~342,~~941~~316.7231 2-A-6 0.00 043.0070 39,~~730~~686.0030 0.00 7,946,000.00 2-A-7 0.00 0.00 ~~198~~191,~~650~~187.0099 0.00 3937,~~656~~342,~~941~~316.7231 2-A-8 0.00 0.00 ~~231~~223,~~758~~052.3365 0.00 3937,~~656~~342,~~941~~316.7231 2-A-9 0.00 0.00 ~~430~~414,~~408~~240.3364 0.00 7974,~~313~~684,~~883~~632.4362 2-A-10 0.00 0.00 ~~187~~180,~~724~~672.2565 0.00 3937,~~656~~342,~~941~~316.7231 2-A-11 0.00 0.00 4442,~~034~~380.0800 0.00 3937,~~656~~342,~~941~~316.7231 2-A-12 0.00 0.00 ~~189~~182,~~379~~265.6788 0.00 3937,~~656~~342,~~941~~316.7231 2-A-13 0.00 0.00 4240,~~378~~786.6777 0.00 3937,~~656~~342,~~941~~316.7231 2-A-14 0.00 07.0032 6,~~903~~644.8753 0.00 1,~~453~~368,~~322~~497.6167 2-A-15 0.00 0.00 ~~188~~181,~~386~~309.4294 0.00 3937,~~656~~342,~~941~~316.7231 3-A-1 0.00 0.00 ~~347~~316,~~660~~080.0005 0.00 6860,~~292~~471,~~415~~654.7856 3-A-2 0.00 0.00 1312,~~215~~014.0061 0.00 2,~~595~~298,~~881~~604.8271 A-LR 0.00 0.00 0.3509 0.00 0.00 A-UR 0.00 0.00 0.2500 0.00 0.00 15-PO 0.00 0.00 0.00 0.00 ~~402~~397,~~152~~324.7549 30-P0 0.00 0.00 0.00 0.00 1,~~415~~356,~~170~~729.7824 15-A-X 0.00 0.00 2018,~~028~~035.1311 0.00 3,~~843~~331,~~259~~642.6362 30-A-X 0.00 024.0090 2422,~~096~~616.9213 0.00 4,~~431~~146,~~879~~420.5813 B-1 0.00 018.0062 2322,~~010~~880.7664 0.00 4,~~523~~501,~~666~~317.1810 B-2 0.00 09.0031 11,~~502~~437.8480 0.00 2,~~261~~250,~~333~~161.9083 B-3 0.00 05.0081 7,~~186~~145.1047 0.00 1,~~412~~405,~~709~~730.7024 B-4 0.00 04.0007 5,~~032~~004.8135 0.00 ~~989~~984,~~395~~507.9889 B-5 0.00 04.0007 5,~~032~~004.8135 0.00 ~~989~~984,~~395~~507.9889 B-6 0.00 02.0033 2,~~882~~866.9464 0.00 ~~566~~563,~~754~~954.8682 P 0.00 0.00 0.00 0.00 0.00 Totals 0.00 0949.0078 2,~~990~~867,~~771~~788.1097 0.00 (1) Amount also includes Coupon Cap or Basis Risk Shortfalls, if applicable.

Interest Distribution Factors Statement Class Original Current Beginning Current Payment of Face Certificate Certificate/ Accrued Unpaid Interest Amount Rate Notional Interest Shortfall (1) Balance 1-A-1 39,104,000.00 5.75000% ~~1000~~982.~~00000000~~58165993 4.~~79166658~~70820376 0.00000000 1-A-2 0.00 0.00000% ~~1000~~982.~~00000000~~58165993 0.00000000 0.00000000 1-A-3 39,104,000.00 5.75000% ~~1000~~972.~~00000000~~35480795 4.~~79166658~~65920008 0.00000000 1-A-4 950,000.00 5.75000% 1000.00000000 4.79166316 0.00000000 1-A-5 15,000,000.00 5.75000% 1000.00000000 4.79166667 0.00000000 1-A-6 4,789,000.00 5.75000% 1000.00000000 4.79166632 0.00000000 2-A-1 20,000,000.00 6.50000% ~~1000~~963.~~00000000~~49617750 5.~~41666650~~21893750 0.00000000 2-A-2 30,784,000.00 6.00000% ~~1000~~952.~~00000000~~88796518 54.~~00000000~~76443997 0.00000000 2-A-3 1,000,000.00 6.00000% 1000.00000000 5.00000000 0.00000000 2-A-4 38,274,000.00 5.69000% ~~1000~~963.~~00000000~~49617730 4.~~74166667~~56857762 0.00000000 2-A-5 0.00 1.31000% ~~1000~~963.~~00000000~~49617720 1.~~09166675~~05181676 0.00000000 2-A-6 7,946,000.00 6.00000% 1000.00000000 5.00000000 0.00000000 2-A-7 39,730,000.00 6.00000% ~~1000~~963.~~00000000~~49617720 54.~~00000000~~81748100 0.00000000 2-A-8 39,730,000.00 7.00000% ~~1000~~963.~~00000000~~49617720 5.~~83333325~~62039441 0.00000000 2-A-9 79,460,000.00 6.50000% ~~1000~~963.~~00000000~~49617732 5.~~41666662~~21893758 0.00000000 2-A-10 39,730,000.00 5.67000% ~~1000~~963.~~00000000~~49617720 4.~~72500000~~55251951 0.00000000 2-A-11 0.00 1.33000% ~~1000~~963.~~00000000~~49617720 1.~~10833325~~06787491 0.00000000 2-A-12 39,730,000.00 5.72000% ~~1000~~963.~~00000000~~49617720 4.~~76666675~~59266499 0.00000000 2-A-13 0.00 1.28000% ~~1000~~963.~~00000000~~49617720 1.~~06666675~~02772917 0.00000000 2-A-14 1,456,000.00 5.69000% ~~1000~~963.~~00000000~~49617445 4.~~74166896~~56857830 0.00000000 2-A-15 39,730,000.00 5.69000% ~~1000~~963.~~00000000~~49617720 4.~~74166675~~56857765 0.00000000 3-A-1 69,532,000.00 6.00000% ~~1000~~909.~~00000000~~16428206 54.~~00000000~~54582135 0.00000000 3-A-2 2,643,000.00 6.00000% ~~1000~~909.~~00000000~~16428301 54.~~00000000~~54582293 0.00000000 A-LR 50.00 6.00000% ~~1000~~0.00000000 50.00000000 0.00000000 A-UR 50.00 6.00000% ~~1000~~0.00000000 50.00000000 0.00000000 15-PO 403,746.77 0.00000% ~~1000~~988.~~00000000~~09870355 0.00000000 0.00000000 30-P0 1,417,352.09 0.00000% ~~1000~~958.~~00000000~~75015784 0.00000000 0.00000000 15-A-X 0.00 6.00000% ~~1000~~900.~~00000000~~48920119 54.~~00000004~~50244485 0.00000000 30-A-X 0.00 6.50000% ~~1000~~939.~~00000000~~58209477 5.~~41666663~~08940196 0.00000000 B-1 4,531,000.00 6.~~09422~~09452% ~~1000~~995.~~00000000~~10506731 5.~~07851688~~05390863 0.00000000 B-2 2,265,000.00 6.~~09422~~09452% ~~1000~~995.~~00000000~~10506843 5.~~07851656~~05390728 0.00000000 B-3 1,415,000.00 6.~~09422~~09452% ~~1000~~995.~~00000000~~10506714 5.~~07851590~~05390813 0.00000000 B-4 991,000.00 6.~~09422~~09452% ~~1000~~995.~~00000000~~10506559 5.~~07851665~~05390515 0.00000000 B-5 991,000.00 6.~~09422~~09452% ~~1000~~995.~~00000000~~10506559 5.~~07851665~~05390515 0.00000000 B-6 567,673.69 6.~~09422~~09452% ~~1000~~995.~~00000000~~10507524 5.~~07851615~~05390694 0.00000000 P 0.01 0.00000% 0.00000000 0.00000000 0.00000000

Interest Distribution Factors Statement (continued) Class Current Non-Supported Total Remaining Unpaid Ending Interest Interest Interest Interest Certificate/ Shortfall(1) Shortfall Distribution Shortfall(1) Notional Balance 1-A-1 0.00000000 0.00000000 4.~~93333342~~83440569 0.00000000 ~~999~~967.~~97442717~~08810582 1-A-2 0.00000000 0.00000000 0.00000000 0.00000000 ~~999~~967.~~97442717~~08810582 1-A-3 0.00000000 0.~~00000000~~00512480 4.~~79166658~~65407529 0.00000000 ~~996~~960.~~64899780~~20771302 1-A-4 0.00000000 0.~~00000000~~00527368 4.~~79166316~~78640000 0.00000000 1000.00000000 1-A-5 0.00000000 0.~~00000000~~00527067 4.~~79166667~~78639600 0.00000000 1000.00000000 1-A-6 0.00000000 0.~~00000000~~00527041 4.~~79166632~~78639591 0.00000000 1000.00000000 2-A-1 0.00000000 0.~~00000000~~00574050 5.~~41666650~~21319700 0.00000000 ~~998~~939.~~16113050~~90224800 2-A-2 0.00000000 0.~~00000000~~00524071 54.~~00000000~~75919926 0.00000000 ~~997~~922.~~62674506~~43751007 2-A-3 0.00000000 0.~~00000000~~00550000 54.~~00000000~~99450000 0.00000000 1000.00000000 2-A-4 0.00000000 0.~~00000000~~00502508 4.~~74166667~~56355254 0.00000000 ~~998~~939.~~16113053~~90224800 2-A-5 0.00000000 0.~~00000000~~00115706 1.~~09166675~~05065970 0.00000000 ~~998~~939.~~16113063~~90224792 2-A-6 0.00000000 0.~~00000000~~00549962 54.~~00000000~~99450038 0.00000000 1000.00000000 2-A-7 0.00000000 0.00000000 54.~~00000000~~81218198 0.00000000 ~~998~~939.~~16113063~~90224792 2-A-8 0.00000000 0.00000000 5.~~83333325~~61421218 0.00000000 ~~998~~939.~~16113063~~90224792 2-A-9 0.00000000 0.00000000 5.~~41666662~~21319708 0.00000000 ~~998~~939.~~16113051~~90224792 2-A-10 0.00000000 0.00000000 4.~~72500000~~54751196 0.00000000 ~~998~~939.~~16113063~~90224792 2-A-11 0.00000000 0.00000000 1.~~10833325~~06670023 0.00000000 ~~998~~939.~~16113063~~90224792 2-A-12 0.00000000 0.00000000 4.~~76666675~~58761339 0.00000000 ~~998~~939.~~16113063~~90224792 2-A-13 0.00000000 0.00000000 1.~~06666675~~02659879 0.00000000 ~~998~~939.~~16113063~~90224792 2-A-14 0.00000000 0.~~00000000~~00502747 4.~~74166896~~56355082 0.00000000 ~~998~~939.~~16113324~~90224588 2-A-15 0.00000000 0.00000000 4.~~74166675~~56355248 0.00000000 ~~998~~939.~~16113063~~90224792 3-A-1 0.00000000 0.00000000 54.~~00000000~~54582135 0.00000000 ~~982~~869.~~17246419~~69531381 3-A-2 0.00000000 0.00000000 54.~~00000000~~54582293 0.00000000 ~~982~~869.~~17246311~~69531215 A-LR 0.00000000 0.00000000 71.~~00000000~~80000000 0.00000000 0.00000000 A-UR 0.00000000 0.00000000 50.00000000 0.00000000 0.00000000 15-PO 0.00000000 0.00000000 0.00000000 0.00000000 ~~996~~984.~~05193126~~09329689 30-P0 0.00000000 0.00000000 0.00000000 0.00000000 ~~998~~957.~~46099638~~22809426 15-A-X 0.00000000 0.00000000 54.~~00000004~~50244485 0.00000000 ~~959~~831.~~46542657~~74081778 30-A-X 0.00000000 0.~~00000000~~00559719 5.~~41666663~~08380477 0.00000000 ~~996~~932.~~22749507~~06001315 B-1 0.00000000 0.~~00000000~~00410947 5.~~07851688~~04979916 0.00000000 ~~998~~993.~~38141249~~44892960 B-2 0.00000000 0.~~00000000~~00411038 5.~~07851656~~04980132 0.00000000 ~~998~~993.~~38141280~~44893157 B-3 0.00000000 0.~~00000000~~00410601 5.~~07851590~~04980212 0.00000000 ~~998~~993.~~38141343~~44893286 B-4 0.00000000 0.~~00000000~~00410696 5.~~07851665~~04979818 0.00000000 ~~998~~993.~~38141271~~44893037 B-5 0.00000000 0.~~00000000~~00410696 5.~~07851665~~04979818 0.00000000 ~~998~~993.~~38141271~~44893037 B-6 0.00000000 0.~~00000000~~00410447 5.~~07851615~~04980247 0.00000000 ~~998~~993.~~38141169~~44893014 P 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 (1) Amount also includes Coupon Cap or Basis Risk Shortfalls, if applicable. NOTE: All classes per $1,000 denomination.

Certificateholder Account Statement CERTIFICATE ACCOUNT Beginning Balance 0.00 Deposits Payments of Interest and Principal 37,~~142~~738,~~432~~933.1166 Reserve Funds and Credit Enhancements 0.00 Proceeds from Repurchased Loans 0.00 Servicer Advances 920,~~536~~090.8915 Gains & Subsequent Recoveries (Realized Losses) 0.00 Prepayment Penalties 0.00 Swap/Cap Payments 54,~~539~~935.7300 Total Deposits 37,~~157~~763,~~508~~958.7381 Withdrawals Swap Payments 0.00 Reserve Funds and Credit Enhancements 0.00 Total Administration Fees 5654,~~531~~285.1082 Payment of Interest and Principal 37,~~100~~709,~~977~~672.6399 Total Withdrawals (Pool Distribution Amount) 37,~~157~~763,~~508~~958.7381 Ending Balance 0.00 Servicer Advances are calculated as delinquent scheduled principal and interest.

PREPAYMENT/CURTAILMENT INTEREST SHORTFALL Total Prepayment/Curtailment Interest Shortfall 01,152.0029 Servicing Fee Support 0.00 Non-Supported Prepayment/Curtailment Interest Shortfall 01,152.0029

ADMINISTRATION FEES Gross Servicing Fee* 5653,~~218~~974.1282 Lender Paid Mortgage Insurance* ~~312~~311.9800 Supported Prepayment/Curtailment Interest Shortfall 0.00 Total Administration Fees 5654,~~531~~285.1082 *Servicer Payees include: BANK OF AMERICA, N.A.; CENLAR FSB; CITIMORTGAGE, INC.; COLONIAL SAVINGS, F.A.; COUNTRYWIDE HOME LOANS SERVICING LP; GMAC MORTGAGE CORPORATION; HSBC MORTGAGE CORPORATION (USA); NATIONAL CITY MTG CO; SUN TRUST BANK; WACHOVIA MORTGAGE CORPORATION; WASHINGTON MUTUAL BANK, F.A.; WELLS FARGO BANK, N.A.

Reserve and Guaranty Funds Account Name Beginning Current Current Ending Balance Withdrawals Deposits Balance Cap Account 1,000.00 5,~~539~~137.7351 54,~~539~~935.7300 ~~1,000~~797.0049 Hedge Funds Account Name Funds In (A) Funds Out(B) Net Amount(A - B) 1-A-1 Cap Agreement - Bear Stearns 54,~~539~~935.7300 0.00 54,~~539~~935.7300

Collateral Statement Group 1 2 Collateral Description Fixed 30 Year Fixed 15 Year Weighted Average Coupon Rate 6.~~474700~~467063 6.~~493922~~487652 Weighted Average Net Rate 6.~~224700~~217063 6.~~288048~~281293 Weighted Average Pass-Through Rate 6.~~223476~~215812 6.~~286437~~279548 Weighted Average Remaining Term ~~348~~345 ~~172~~169 Principal And Interest Constant 1,~~303~~271,~~620~~234.6940 ~~684~~633,~~362~~410.0008 Beginning Loan Count ~~533~~523 ~~123~~117 Loans Paid in Full 16 13 Ending Loan Count ~~532~~517 ~~122~~114 Beginning Scheduled Balance ~~207~~202,~~715~~243,~~349~~137.70 7568,~~448~~855,~~522~~788.8590 Ending Scheduled Balance ~~207~~198,~~391~~806,~~315~~406.3617 7465,~~149~~994,~~630~~739.8188 Actual Ending Collateral Balance ~~207~~198,~~530~~943,~~450~~473.9910 7466,~~358~~193,~~801~~658.6382 Scheduled Principal ~~182~~181,~~875~~301.2979 ~~276~~261,~~064~~149.6375 Unscheduled Principal ~~141~~3,~~159~~255,429.0574 12,~~022~~599,~~827~~899.4127 Scheduled Interest 1,~~120~~089,~~745~~932.4061 ~~408~~372,~~297~~260.3733 Servicing Fees 4342,~~274~~133.0399 1211,~~944~~840.0983 Master Servicing Fees 0.00 0.00 Trustee Fee 0.00 0.00 FRY Amount 0.00 0.00 Special Hazard Fee 0.00 0.00 Other Fee ~~211~~210.7186 ~~101~~100.2714 Pool Insurance Fee 0.00 0.00 Spread 1 0.00 0.00 Spread 2 0.00 0.00 Spread 3 0.00 0.00 Net Interest 1,~~077~~047,~~259~~587.6676 ~~395~~360,~~252~~319.0136 Realized Loss Amount 0.00 0.00 Cumulative Realized Loss 0.00 0.00 Percentage of Cumulative Losses 0.0000 0.0000 Prepayment Penalty Waived Amount 0.00 0.00 Prepayment Penalty Waived Count 0 0 Prepayment Penalty Paid Amount 0.00 0.00 Prepayment Penalty Paid Count 0 0 Special Servicing Fee 0.00 0.00

Collateral Statement Group Total Collateral Description Fixed 15 & 30 Year Weighted Average Coupon Rate 6.~~479821~~472292 Weighted Average Net Rate 6.~~241579~~233377 Weighted Average Pass-Through Rate 6.~~240252~~232000 Weighted Average Remaining Term 301 Principal And Interest Constant 1,~~987~~904,~~982~~644.6948 Beginning Loan Count ~~656~~640 Loans Paid in Full 29 Ending Loan Count ~~654~~631 Beginning Scheduled Balance ~~283~~271,~~163~~098,~~872~~926.5660 Ending Scheduled Balance ~~281~~264,~~540~~801,~~946~~146.1705 Actual Ending Collateral Balance ~~281~~265,~~889~~137,~~252~~131.6292 Scheduled Principal ~~458~~442,~~939~~451.9254 Unscheduled Principal 15,~~163~~855,~~986~~329.4601 Scheduled Interest 1,~~529~~462,~~042~~192.7794 Servicing Fees 5653,~~218~~974.1282 Master Servicing Fees 0.00 Trustee Fee 0.00 FRY Amount 0.00 Special Hazard Fee 0.00 Other Fee ~~312~~311.9800 Pool Insurance Fee 0.00 Spread 1 0.00 Spread 2 0.00 Spread 3 0.00 Net Interest 1,~~472~~407,~~511~~907.6712 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Percentage of Cumulative Losses 0.0000 Prepayment Penalty Waived Amount 0.00 Prepayment Penalty Waived Count 0 Prepayment Penalty Paid Amount 0.00 Prepayment Penalty Paid Count 0 Special Servicing Fee 0.00

Additional Reporting - Deal Level Informational Reporting Beginning Balance - Collateral Group 1 ~~104~~102,~~273~~440,~~176~~925.2166 Ending Balance - Collateral Group 1 ~~104~~101,~~135~~353,~~107~~995.7690 Beginning Balance - Collateral Group 2 ~~103~~99,~~442~~802,~~173~~212.4904 Ending Balance - Collateral Group 2 ~~103~~97,~~256~~452,~~207~~410.6027 Beginning Balance - Collateral Group 3 7568,~~448~~855,~~522~~788.8590 Ending Balance - Collateral Group 3 7465,~~149~~994,~~630~~739.8188 Structural Reporting Subordinate % - Collateral Group 1 3.~~800294~~855486% Subordinate % - Collateral Group 2 3.~~849661~~980756% Subordinate % - Collateral Group 3 34.~~823952~~145553% Senior % - Collateral Group 1 96.~~199706~~144514% Senior % - Collateral Group 2 96.~~150339~~019244% Senior % - Collateral Group 3 9695.~~176048~~854447% Senior Prepayment % - Collateral Group 1 100.000000% Senior Prepayment % - Collateral Group 2 100.000000% Senior Prepayment % - Collateral Group 3 100.000000% Trigger Event Reporting Delinquency Test - Collateral Group 1 Trigger Result Pass Threshold Value 50.000000% Calculated Value 0.000000% Cumulative Loss Test - Collateral Group 1 Trigger Result Pass Threshold Value 30.000000% Calculated Value 0.000000% Senior Stepdown Test - Collateral Group 1 Trigger Result Pass Delinquency Test - Collateral Group 2 Trigger Result Pass Threshold Value 50.000000% Calculated Value 0.000000% Cumulative Loss Test - Collateral Group 2 Trigger Result Pass Threshold Value 30.000000% Calculated Value 0.000000% Senior Stepdown Test - Collateral Group 2 Trigger Result Pass Delinquency Test - Collateral Group 3 Trigger Result Pass Threshold Value 50.000000% Calculated Value 020.~~000000~~521308% Cumulative Loss Test - Collateral Group 3 Trigger Result Pass Threshold Value 30.000000% Calculated Value 0.000000% Senior Stepdown Test - Collateral Group 3 Trigger Result Pass

Delinquency Status DELINQUENT BANKRUPTCY FORECLOSURE REO Total No. of Loans No. of Loans No. of Loans No. of Loans No. of Loans Actual Balance Actual Balance Actual Balance Actual Balance Actual Balance 0-29 Days 0 0 0 0 0.00 0.00 0.00 0.00 30 Days 213 0 0 0 213 12,~~324~~388,~~563~~550.3528 0.00 0.00 0.00 12,~~324~~388,~~563~~550.3528 60 Days 01 0 0 0 01 0588,352.0051 0.00 0.00 0.00 0588,352.0051 90 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 120 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 150 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 180+ Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 Totals 214 0 0 0 214 12,~~324~~976,~~563~~902.3579 0.00 0.00 0.00 12,~~324~~976,~~563~~902.3579 No. of Loans No. of Loans No. of Loans No. of Loans No. of Loans Actual Balance Actual Balance Actual Balance Actual Balance Actual Balance 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 02.~~305810~~060222% 0.000000% 0.000000% 0.000000% 02.~~305810~~060222% 0.~~469888~~900874% 0.000000% 0.000000% 0.000000% 0.~~469888~~900874% 60 Days 0.~~000000~~158479% 0.000000% 0.000000% 0.000000% 0.~~000000~~158479% 0.~~000000~~221905% 0.000000% 0.000000% 0.000000% 0.~~000000~~221905% 90 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 120 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 150 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 180+ Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% Totals 02.~~305810~~218700% 0.000000% 0.000000% 0.000000% 02.~~305810~~218700% 01.~~469888~~122779% 0.000000% 0.000000% 0.000000% 01.~~469888~~122779%

Current Period Class A Insufficient Funds 0.00 Principal Balance of Contaminated Properties 0.00 Periodic Advance 920,~~536~~090.8915

CREDIT ENHANCEMENT Original $ Original % Current $ Current % Bankruptcy 150,000.00 0.05297286% 150,000.00 0.~~05327822~~05664628% Fraud 8,494,839.00 2.99997274% 8,494,839.00 3.~~01726591~~20800689% Special Hazard 4,720,073.00 1.66690509% 4,720,073.00 1.~~67651387~~78249719% Limit of Subordinate's Exposure to Certain Types of Losses

Delinquency Status By Group DELINQUENT BANKRUPTCY FORECLOSURE REO Total 1 No. of Loans No. of Loans No. of Loans No. of Loans No. of Loans Actual Balance Actual Balance Actual Balance Actual Balance Actual Balance 0-29 Days 0 0 0 0 0.00 0.00 0.00 0.00 30 Days 113 0 0 0 113 ~~732~~2,~~283~~388,550.9028 0.00 0.00 0.00 ~~732~~2,~~283~~388,550.9028 60 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 90 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 120 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 150 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 180+ Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 Totals 113 0 0 0 113 ~~732~~2,~~283~~388,550.9028 0.00 0.00 0.00 ~~732~~2,~~283~~388,550.9028 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 02.~~187970~~514507% 0.000000% 0.000000% 0.000000% 02.~~187970~~514507% 01.~~352856~~200618% 0.000000% 0.000000% 0.000000% 01.~~352856~~200618% 60 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 90 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 120 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 150 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 180+ Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% Totals 02.~~187970~~514507% 0.000000% 0.000000% 0.000000% 02.~~187970~~514507% 01.~~352856~~200618% 0.000000% 0.000000% 0.000000% 01.~~352856~~200618% DELINQUENT BANKRUPTCY FORECLOSURE REO Total 2 No. of Loans No. of Loans No. of Loans No. of Loans No. of Loans Actual Balance Actual Balance Actual Balance Actual Balance Actual Balance 0-29 Days 0 0 0 0 0.00 0.00 0.00 0.00 30 Days 10 0 0 0 10 ~~592,279~~0.4500 0.00 0.00 0.00 ~~592,279~~0.4500 60 Days 01 0 0 0 01 0588,352.0051 0.00 0.00 0.00 0588,352.0051 90 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 120 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 150 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 180+ Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 Totals 1 0 0 0 1 ~~592~~588,~~279~~352.4551 0.00 0.00 0.00 ~~592~~588,~~279~~352.4551 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 0.~~819672~~000000% 0.000000% 0.000000% 0.000000% 0.~~819672~~000000% 0.~~796516~~000000% 0.000000% 0.000000% 0.000000% 0.~~796516~~000000% 60 Days 0.~~000000~~877193% 0.000000% 0.000000% 0.000000% 0.~~000000~~877193% 0.~~000000~~888835% 0.000000% 0.000000% 0.000000% 0.~~000000~~888835% 90 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 120 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 150 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 180+ Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% Totals 0.~~819672~~877193% 0.000000% 0.000000% 0.000000% 0.~~819672~~877193% 0.~~796516~~888835% 0.000000% 0.000000% 0.000000% 0.~~796516~~888835%

Realized Loss Report - Collateral Summary - No Realized Loss Information to report this period. 1 - No Realized Loss Information to report this period. 2 - No Realized Loss Information to report this period. Calculation Methodology: Monthly Default Rate (MDR): sum(Beg Scheduled Balance of Liquidated Loans)/ sum(Beg Scheduled Balance). Conditional Default Rate (CDR): 1-((1-MDR)^12) SDA Standard Default Assumption: If WAS is less than or equal to 30 then CDR / (WAS * 0.02) else if WAS is greater than 30 and less than or equal to 60 then CDR / 0.6 else if WAS is greater than 60 and less than or equal to 120 then CDR / (0.6 - ((WAS - 60) * 0.0095)) else if WAS is greater than 120 then CDR / 0.03 Cumulative Loss Severity ~~Approximation for current period~~: ~~sum~~Sum (Realized ~~Loss Amount~~Losses) /~~sum~~ Sum (~~Beg~~Ending ~~Scheduled~~Actual Balance offor ~~Liquidated Loans). Includes losses on~~ loans ~~liquidating~~that inhave ~~the~~experienced ~~current~~a ~~period only~~loss).

Prepayment Detail - Prepayments during Current Period Summary Loans Paid In Full Repurchased Loans Original Current Original Current Principal Scheduled Principal Scheduled Group Count Balance Balance Count Balance Balance 1 16 702,~~000~~997,500.00 692,~~713~~971,798.4247 0 0.00 0.00 2 13 ~~966~~2,~~800~~685,000.00 ~~951~~2,~~533~~610,897.7739 0 0.00 0.00 Total 29 15,~~036~~682,~~800~~500.00 15,~~021~~582,~~247~~695.1986 0 0.00 0.00

Prepayment Detail - Prepayments during Current Period (continued) Summary Substitution Loans Liquidated Loans Curtailments Original Current Original Current Principal Scheduled Principal Scheduled Curtailment Group Count Balance Balance Count Balance Balance Amount 1 0 0.00 0.00 0 0.00 0.00 71286,~~494~~025.5154 2 0 0.00 0.00 0 0.00 0.00 74(1,~~401~~960.4986) Total 0 0.00 0.00 0 0.00 0.00 ~~145~~284,~~896~~064.0068

Prepayment Loan Detail - Prepayments during Current Period First Original Loan LTV at Payment Principal Prepayment Group Number State Origination Date Balance Amount 1 ~~0006331254~~0001245644 PACO 7980.5500 01-~~Aug~~Jun-2006 220,000.00 212,035.68 1 0003966770 FL 53.23 01-Sep-2006 103,000.00 102,259.15 1 0007841496 KY 76.76 01-Sep-2006 580,000.00 575,512.70 1 0007847959 VA 80.00 01-Oct-2006 484,000.00 69483,~~664~~999.5498 21 ~~0129334988~~0007848596 NJTN 7480.00 01-Oct-2006 703,200.00 698,016.85 1 0152012696 CA 79.99 01-Jul-2006 907,300.00 897,579.84 2 0119679820 WI 80.00 01-Jul-2006 600,000.00 577,658.39 2 0140981632 WA 75.00 01-Sep-2006 ~~966~~1,~~800~~500,000.00 ~~948~~1,~~425~~455,482.9246 2 0143136096 FL 75.00 01-Oct-2006 585,000.00 568,719.28

Prepayment Loan Detail - Prepayments during Current Period (continued) Current Loan PIF Months Loan Original Group Number Type Delinquent Rate Term Seasoning 1 ~~0006331254~~0001245644 Loan Paid in Full (1) 6.750% 360 11 1 0003966770 Loan Paid in Full 0 7.250% 360 8 1 0007841496 Loan Paid in Full 0 6.~~000~~875% 360 8 1 0007847959 Loan Paid in Full 0 6.875% 360 7 1 0007848596 Loan Paid in Full 0 6.500% 360 7 1 0152012696 Loan Paid in Full 0 6.250% 360 10 2 ~~0129334988~~0119679820 Loan Paid in Full (1) 6.500% 180 10 2 0140981632 Loan Paid in Full 0 6.750% 180 8 2 0143136096 Loan Paid in Full 0 7.~~125~~250% 180 57

Prepayment Rates

Summary SMM CPR PSA Current Month 02.~~412~~163% Current Month 423.~~830~~084% Current Month ~~252~~912.~~341~~342% 3 Month Average 01.~~000~~862% 3 Month Average 020.~~000~~138% 3 Month Average 0863.~~000~~704% 12 Month Average 0.000% 12 Month Average 0.000% 12 Month Average 0.000% CPR: Current vs. 12mo Average* PSA: Current vs. 12mo Average* Month Current 12mo Avg. Month Current 12mo Avg. ~~Mar~~Jun-2006 N/A N/A ~~Mar~~Jun-2006 N/A N/A ~~Apr~~Jul-2006 N/A N/A ~~Apr~~Jul-2006 N/A N/A ~~May~~Aug-2006 N/A N/A ~~May~~Aug-2006 N/A N/A ~~Jun~~Sep-2006 N/A N/A ~~Jun~~Sep-2006 N/A N/A ~~Jul~~Oct-2006 N/A N/A ~~Jul~~Oct-2006 N/A N/A ~~Aug~~Nov-2006 N/A N/A ~~Aug~~Nov-2006 N/A N/A ~~Sep~~Dec-2006 N/A N/A ~~Sep~~Dec-2006 N/A N/A ~~Oct~~Jan-~~2006~~2007 N/A N/A ~~Oct~~Jan-~~2006~~2007 N/A N/A ~~Nov~~Feb-~~2006~~2007 ~~N/A~~4.830% N/A ~~Nov~~Feb-~~2006~~2007 ~~N/A~~252.341% N/A ~~Dec~~Mar-~~2006~~2007 ~~N/A~~15.926% N/A ~~Dec~~Mar-~~2006~~2007 ~~N/A~~752.890% N/A ~~Jan~~Apr-2007 ~~N/A~~21.403% N/A ~~Jan~~Apr-2007 ~~N/A~~925.881% N/A ~~Feb~~May-2007 423.~~830~~084% N/A ~~Feb~~May-2007 ~~252~~912.~~341~~342% N/A *The text reported in the above table is presented *The text reported in the above table is presented graphically on the monthly bond remittance report. The graphically on the monthly bond remittance report. The monthly bond remittance report can be viewed online at monthly bond remittance report can be viewed online at www.ctslink.com. www.ctslink.com. 1 SMM CPR PSA Current Month 01.~~068~~611% Current Month 017.~~813~~709% Current Month 36631.~~918~~615% 3 Month Average 01.~~000~~311% 3 Month Average 014.~~000~~612% 3 Month Average 0559.~~000~~253% 12 Month Average 0.000% 12 Month Average 0.000% 12 Month Average 0.000% CPR: Current vs. 12mo Average* PSA: Current vs. 12mo Average* Month Current 12mo Avg. Month Current 12mo Avg. ~~Mar~~Jun-2006 N/A N/A ~~Mar~~Jun-2006 N/A N/A ~~Apr~~Jul-2006 N/A N/A ~~Apr~~Jul-2006 N/A N/A ~~May~~Aug-2006 N/A N/A ~~May~~Aug-2006 N/A N/A ~~Jun~~Sep-2006 N/A N/A ~~Jun~~Sep-2006 N/A N/A ~~Jul~~Oct-2006 N/A N/A ~~Jul~~Oct-2006 N/A N/A ~~Aug~~Nov-2006 N/A N/A ~~Aug~~Nov-2006 N/A N/A ~~Sep~~Dec-2006 N/A N/A ~~Sep~~Dec-2006 N/A N/A ~~Oct~~Jan-~~2006~~2007 N/A N/A ~~Oct~~Jan-~~2006~~2007 N/A N/A ~~Nov~~Feb-~~2006~~2007 ~~N/A~~0.813% N/A ~~Nov~~Feb-~~2006~~2007 ~~N/A~~36.918% N/A ~~Dec~~Mar-~~2006~~2007 ~~N/A~~11.673% N/A ~~Dec~~Mar-~~2006~~2007 ~~N/A~~487.331% N/A ~~Jan~~Apr-2007 ~~N/A~~14.454% N/A ~~Jan~~Apr-2007 ~~N/A~~558.813% N/A ~~Feb~~May-2007 017.~~813~~709% N/A ~~Feb~~May-2007 36631.~~918~~615% N/A *The text reported in the above table is presented *The text reported in the above table is presented graphically on the monthly bond remittance report. The graphically on the monthly bond remittance report. The monthly bond remittance report can be viewed online at monthly bond remittance report can be viewed online at www.ctslink.com. www.ctslink.com. 2 SMM CPR PSA Current Month 13.~~361~~790% Current Month 1537.~~160~~103% Current Month 12,~~368~~174.~~639~~755% 3 Month Average 03.~~000~~445% 3 Month Average 034.~~000~~161% 3 Month Average 02,258.~~000~~359% 12 Month Average 0.000% 12 Month Average 0.000% 12 Month Average 0.000% CPR: Current vs. 12mo Average* PSA: Current vs. 12mo Average* Month Current 12mo Avg. Month Current 12mo Avg. ~~Mar~~Jun-2006 N/A N/A ~~Mar~~Jun-2006 N/A N/A ~~Apr~~Jul-2006 N/A N/A ~~Apr~~Jul-2006 N/A N/A ~~May~~Aug-2006 N/A N/A ~~May~~Aug-2006 N/A N/A ~~Jun~~Sep-2006 N/A N/A ~~Jun~~Sep-2006 N/A N/A ~~Jul~~Oct-2006 N/A N/A ~~Jul~~Oct-2006 N/A N/A ~~Aug~~Nov-2006 N/A N/A ~~Aug~~Nov-2006 N/A N/A ~~Sep~~Dec-2006 N/A N/A ~~Sep~~Dec-2006 N/A N/A ~~Oct~~Jan-~~2006~~2007 N/A N/A ~~Oct~~Jan-~~2006~~2007 N/A N/A ~~Nov~~Feb-~~2006~~2007 ~~N/A~~15.160% N/A ~~Nov~~Feb-~~2006~~2007 ~~N/A~~1,368.639% N/A ~~Dec~~Mar-~~2006~~2007 ~~N/A~~26.873% N/A ~~Dec~~Mar-~~2006~~2007 ~~N/A~~2,039.703% N/A ~~Jan~~Apr-2007 ~~N/A~~38.507% N/A ~~Jan~~Apr-2007 ~~N/A~~2,560.617% N/A ~~Feb~~May-2007 1537.~~160~~103% N/A ~~Feb~~May-2007 12,~~368~~174.~~639~~755% N/A *The text reported in the above table is presented *The text reported in the above table is presented graphically on the monthly bond remittance report. The graphically on the monthly bond remittance report. The monthly bond remittance report can be viewed online at monthly bond remittance report can be viewed online at www.ctslink.com. www.ctslink.com. Calculation Methodology: Single Month Mortality (SMM): (Partial and full prepayments + Repurchases) / (Beginning Scheduled Balance - Scheduled Principal) Conditional PrePayment Rate (CPR): 1 - ((1 - SMM)^12) PSA Standard Prepayment Model: 100 * CPR / (0.2 * MIN(30,WAS)) Weighted Average Seasoning (WAS): sum((Original Term - Remaining Term)*(Current Scheduled Balance/Deal Scheduled Principal Balance))

Interest Rate Stratification Summary 1 Current Number of Outstanding Percentage of Number of Outstanding Percentage of Interest Rate Loans Scheduled Balance(%) Loans Scheduled Balance(%) Range(%) Balance($) Balance($) < 5.250 0 0.00 0.000 0 0.00 0.000 5.250 5.499 3 1,~~476~~464,~~393~~300.6634 0.~~524~~553 2 ~~876~~871,~~055~~792.5156 0.~~422~~439 5.500 5.749 1413 76,~~382~~865,~~501~~057.8655 2.~~622~~593 1413 76,~~382~~865,~~501~~057.8655 3.~~560~~453 5.750 5.999 4746 2524,~~793~~717,~~572~~105.2927 9.~~162~~334 4443 2423,~~365~~305,~~131~~453.4679 11.~~748~~723 6.000 6.249 62 37,~~300~~121,~~234~~968.6674 1314.~~249~~019 51 29,~~425~~336,~~956~~892.1922 14.~~189~~757 6.250 6.499 ~~153~~149 8480,~~531~~468,~~817~~740.4001 30.~~025~~388 ~~116~~115 6159,~~137~~832,~~646~~255.4036 2930.~~479~~096 6.500 6.749 6865 3734,~~821~~753,~~041~~354.9344 13.~~434~~124 3332 1514,~~041~~272,~~071~~787.0974 7.~~253~~179 6.750 6.999 ~~110~~103 3631,~~243~~728,~~657~~856.8729 1211.~~873~~982 8984 2321,~~731~~571,~~229~~050.5043 1110.~~443~~850 7.000 7.249 7068 2018,~~018~~564,~~146~~657.7268 7.~~110~~011 6563 1715,~~374~~950,~~648~~702.8902 8.~~378~~023 7.250 7.499 5856 15,~~969~~237,~~484~~876.1044 5.~~672~~754 5251 13,~~275~~139,~~037~~879.8550 6.~~401~~609 7.500 7.749 2423 6,~~822~~528,~~544~~171.8300 2.~~423~~465 2322 6,~~691~~400,~~940~~022.3197 3.~~227~~219 7.750 7.999 2826 65,~~191~~364,~~327~~294.4275 2.~~199~~026 2725 65,~~148~~322,~~815~~209.7666 2.~~965~~677 >= 8.000 17 1,~~990~~986,~~223~~763.4354 0.~~707~~750 16 1,~~941~~938,~~280~~302.5437 0.~~936~~975 Total ~~654~~631 ~~281~~264,~~540~~801,~~946~~146.1705 100.000 ~~532~~517 ~~207~~198,~~391~~806,~~315~~406.3617 100.000

Interest Rate Stratification (continued) 2 Current Number of Outstanding Percentage of Interest Rate Loans Scheduled Balance(%) Range(%) Balance($) < 5.250 0 0.00 0.000 5.250 5.499 1 ~~600~~592,~~338~~507.1578 0.~~810~~898 5.500 5.749 0 0.00 0.000 5.750 5.999 3 1,~~428~~411,~~440~~651.8348 12.~~926~~139 6.000 6.249 11 7,~~874~~785,~~278~~076.4752 1011.~~619~~797 6.250 6.499 3734 2320,~~394~~636,~~171~~484.0065 31.~~550~~270 6.500 6.749 3533 2220,~~779~~480,~~970~~566.8470 3031.~~722~~034 6.750 6.999 2119 1210,~~512~~157,~~428~~805.3786 1615.~~875~~392 7.000 7.249 5 2,~~643~~613,~~497~~955.8366 3.~~565~~961 7.250 7.499 65 2,~~694~~097,~~446~~996.2594 3.~~634~~179 7.500 7.749 1 ~~130~~128,~~604~~148.5203 0.~~176~~194 7.750 7.999 1 42,~~511~~085.6609 0.~~057~~064 >= 8.000 1 48,~~942~~461.8917 0.~~066~~073 Total ~~122~~114 7465,~~149~~994,~~630~~739.8188 100.000

Filing Compare · MASTR Alternative Loan Trust 2007-1