Security Group 3 PSA Prepayment Assumption Rates Classes NF and NS Distribution Date 0% 250% 502% 800% 1050% Initial Percent ..................     100 100 100 100 100 June 2006 .......................... 99 90 80 69 60 June 2007 .......................... 98 76 56 37 23 June 2008 .......................... 97 64 39 19 9 June 2009 .......................... 96 53 27 10 3 June 2010 .......................... 95 45 18 5 1 June 2011 .......................... 94 37 13 3 0 June 2012 .......................... 92 31 9 1 0 June 2013 .......................... 91 26 6 1 0 June 2014 .......................... 89 21 4 0 0 June 2015 .......................... 88 18 3 0 0 June 2016 .......................... 86 15 2 0 0 June 2017 .......................... 84 12 1 0 0 June 2018 .......................... 82 10 1 0 0 June 2019 .......................... 79 8 1 0 0 June 2020 .......................... 77 7 0 0 0 June 2021 .......................... 74 5 0 0 0 June 2022 .......................... 71 4 0 0 0 June 2023 .......................... 68 3 0 0 0 June 2024 .......................... 64 3 0 0 0 June 2025 .......................... 60 2 0 0 0 June 2026 .......................... 56 2 0 0 0 June 2027 .......................... 52 1 0 0 0 June 2028 .......................... 47 1 0 0 0 June 2029 .......................... 42 1 0 0 0 June 2030 .......................... 36 0 0 0 0 June 2031 .......................... 30 0 0 0 0 June 2032 .......................... 23 0 0 0 0 June 2033 .......................... 16 0 0 0 0 June 2034 .......................... 8 0 0 0 0 June 2035 .......................... 0 0 0 0 0 Weighted Average Life (years)  ..................   20.5 5.9 3.1 1.9 1.5 Security Group 4 PSA Prepayment Assumption Rates Class CB Classes EI, FE and SG Classes GA and GI Distribution Date 0% 150% 334% 500% 700% 0% 150% 334% 500% 700% 0% 150% 334% 500% 700% Initial Percent ..................    100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 June 2006 ..........................    100 100 100 100 100 99 96 92 89 85 99 95 90 86 81 June 2007 ..........................    100 100 100 100 100 98 89 78 69 59 97 85 71 58 45 June 2008 ..........................    100 100 100 100 100 97 79 62 48 34 96 72 49 30 11 June 2009 ..........................    100 100 100 100 76 95 71 49 33 19 94 61 31 10 0 June 2010 ..........................    100 100 100 89 43 94 64 38 23 11 92 51 17 0 0 June 2011 ..........................    100 100 100 61 25 93 57 30 16 6 90 42 6 0 0 June 2012 ..........................    100 100 92 42 14 91 51 23 11 4 88 34 0 0 0 June 2013 ..........................    100 100 72 29 8 89 45 18 7 2 86 26 0 0 0 June 2014 ..........................    100 100 56 20 4 88 40 14 5 1 84 20 0 0 0 June 2015 ..........................    100 100 44 13 3 86 36 11 3 1 81 14 0 0 0 June 2016 ..........................    100 100 34 9 1 84 32 9 2 0 78 8 0 0 0 June 2017 ..........................    100 100 26 6 1 82 28 7 2 0 75 3 0 0 0 June 2018 ..........................    100 96 20 4 0 79 24 5 1 0 72 0 0 0 0 June 2019 ..........................    100 84 16 3 0 77 21 4 1 0 69 0 0 0 0 June 2020 ..........................    100 74 12 2 0 74 19 3 0 0 65 0 0 0 0 June 2021 ..........................    100 64 9 1 0 71 16 2 0 0 61 0 0 0 0 June 2022 ..........................    100 55 7 1 0 68 14 2 0 0 57 0 0 0 0 June 2023 ..........................    100 48 5 1 0 65 12 1 0 0 53 0 0 0 0 June 2024 ..........................    100 41 4 0 0 61 10 1 0 0 48 0 0 0 0 June 2025 ..........................    100 34 3 0 0 57 9 1 0 0 43 0 0 0 0 June 2026 ..........................    100 29 2 0 0 53 7 1 0 0 37 0 0 0 0 June 2027 ..........................    100 24 2 0 0 49 6 0 0 0 31 0 0 0 0 June 2028 ..........................    100 19 1 0 0 44 5 0 0 0 25 0 0 0 0 June 2029 ..........................    100 15 1 0 0 39 4 0 0 0 18 0 0 0 0 June 2030 ..........................    100 12 1 0 0 34 3 0 0 0 11 0 0 0 0 June 2031 ..........................    100 9 0 0 0 28 2 0 0 0 3 0 0 0 0 June 2032 .......................... 84 6 0 0 0 22 1 0 0 0 0 0 0 0 0 June 2033 .......................... 58 3 0 0 0 15 1 0 0 0 0 0 0 0 0 June 2034 .......................... 30 1 0 0 0 8 0 0 0 0 0 0 0 0 0 June 2035 .......................... 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Weighted Average Life (years)  ..................    28.3 18.7 10.6 7.3 5.3 19.9 8.9 5.0 3.6 2.7 17.0 5.6 3.1 2.3 1.9 S-25