Percentages of Original Class Principal (or Class Notional) Balances
and Weighted Average Lives
Security Group 1
PSA Prepayment Assumption Rates
Classes F, FA, FB, FT, OL, SA, SL, SM and SN
Distribution Date
0%
100%
275%
400%
600%
Initial Percent ..................
100
100
100
100
100
July 2008............................
99
95
89
85
78
July 2009............................
98
89
75
65
51
July 2010............................
97
82
61
49
32
July 2011............................
96
76
51
36
20
July 2012............................
95
71
42
27
13
July 2013............................
94
65
34
20
8
July 2014............................
92
60
28
15
5
July 2015............................
91
55
23
11
3
July 2016............................
89
51
19
8
2
July 2017............................
88
47
15
6
1
July 2018............................
86
43
12
5
1
July 2019............................
84
39
10
3
0
July 2020............................
82
36
8
3
0
July 2021............................
79
32
7
2
0
July 2022............................
77
29
5
1
0
July 2023............................
74
26
4
1
0
July 2024............................
71
23
3
1
0
July 2025............................
68
21
3
1
0
July 2026............................
64
18
2
0
0
July 2027............................
60
16
2
0
0
July 2028............................
56
14
1
0
0
July 2029............................
52
12
1
0
0
July 2030............................
47
10
1
0
0
July 2031............................
42
8
0
0
0
July 2032............................
36
6
0
0
0
July 2033............................
30
4
0
0
0
July 2034............................
23
3
0
0
0
July 2035............................
16
1
0
0
0
July 2036............................
8
0
0
0
0
July 2037............................
0
0
0
0
0
Weighted Average
Life (years) .................. 20.5
10.8
5.5
3.9
2.7
Security Group 2
PSA Prepayment Assumption Rates
Classes AO, TM and TN
Class BA
Class BC
Class BD
Distribution Date
0%
100%
180%
250%
400%
0%
100%
180%
250%
400%
0%
100%
180%
250%
400%
0%
100%
180%
250%
400%
Initial Percent ..................
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
July 2008............................
100
100
100
79
30
100
100
84
60
9
100
100
100
100
100
100
100
100
100
100
July 2009............................
100
100
100
50
0
100
100
61
6
0
100
100
100
100
0
100
100
100
100
0
July 2010............................
100
100
100
29
0
100
100
42
0
0
100
100
100
7
0
100
100
100
100
0
July 2011............................
100
100
100
15
0
100
100
27
0
0
100
100
100
0
0
100
100
100
58
0
July 2012............................
100
100
100
6
0
100
100
17
0
0
100
100
100
0
0
100
100
100
28
0
July 2013............................
100
100
100
2
0
100
100
10
0
0
100
100
100
0
0
100
100
100
9
0
July 2014............................
100
100
100
1
0
100
100
5
0
0
100
100
100
0
0
100
100
100
1
0
July 2015............................
100
100
100
0
0
100
100
3
0
0
100
100
100
0
0
100
100
100
0
0
July 2016............................
100
100
100
0
0
100
100
0
0
0
100
100
97
0
0
100
100
100
0
0
July 2017............................
100
100
95
0
0
100
100
0
0
0
100
100
84
0
0
100
100
100
0
0
July 2018............................
100
100
89
0
0
100
100
0
0
0
100
100
68
0
0
100
100
100
0
0
July 2019............................
100
100
83
0
0
100
100
0
0
0
100
100
51
0
0
100
100
100
0
0
July 2020............................
100
100
76
0
0
100
100
0
0
0
100
100
33
0
0
100
100
100
0
0
July 2021............................
100
100
68
0
0
100
100
0
0
0
100
100
15
0
0
100
100
100
0
0
July 2022............................
100
100
61
0
0
100
100
0
0
0
100
100
0
0
0
100
100
98
0
0
July 2023............................
100
100
55
0
0
100
88
0
0
0
100
100
0
0
0
100
100
87
0
0
July 2024............................
100
100
48
0
0
100
71
0
0
0
100
100
0
0
0
100
100
77
0
0
July 2025............................
100
100
42
0
0
100
54
0
0
0
100
100
0
0
0
100
100
67
0
0
July 2026............................
100
100
36
0
0
100
37
0
0
0
100
100
0
0
0
100
100
58
0
0
July 2027............................
100
100
31
0
0
100
20
0
0
0
100
100
0
0
0
100
100
49
0
0
July 2028............................
100
100
26
0
0
100
4
0
0
0
100
100
0
0
0
100
100
41
0
0
July 2029............................
100
90
21
0
0
100
0
0
0
0
100
71
0
0
0
100
100
34
0
0
July 2030............................
100
76
17
0
0
100
0
0
0
0
100
33
0
0
0
100
100
27
0
0
July 2031............................
100
61
13
0
0
100
0
0
0
0
100
0
0
0
0
100
98
21
0
0
July 2032............................
100
48
10
0
0
100
0
0
0
0
100
0
0
0
0
100
76
16
0
0
July 2033............................
100
35
7
0
0
100
0
0
0
0
100
0
0
0
0
100
55
11
0
0
July 2034............................
100
22
4
0
0
100
0
0
0
0
100
0
0
0
0
100
35
7
0
0
July 2035............................
100
10
2
0
0
38
0
0
0
0
100
0
0
0
0
100
17
3
0
0
July 2036............................
72
0
0
0
0
0
0
0
0
0
23
0
0
0
0
100
0
0
0
0
July 2037............................
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Weighted Average
Life (years) .................. 29.3 24.9 17.4
2.3
0.7
27.8
18.2
3.0
1.2
0.6
28.9
22.6
12.0
2.6
1.3
29.6
26.3
20.5
4.5
1.7
S-18