Common use of NAS classes Clause in Contracts

NAS classes. Classes IX-0, XX-00 and IA-15 are non-accelerated senior, or NAS classes. For the first 60 distribution days, the principal allocation for a NAS class will be zero. For distribution day 61 and after, the principal allocation for each NAS class will equal the percentage shown below of its proportionate share, based on the principal balances of its group’s target-rate classes, of scheduled and unscheduled principal payments on the related pool’s target-rate strip allocated to the group’s target-rate classes for that distribution day. distribution day percentage 0 - 60 0% 61 - 72 30% 73 - 84 40% 85 - 96 60% 97 - 108 80% 109 and after 100%

NAS classes. Classes IX-0, XX-00 IA-4 and IA-15 IA-8 are non-accelerated senior, or NAS NAS, classes. For the first 60 distribution days, the principal allocation for a NAS class will be zero. For distribution day 61 and after, the principal allocation for each NAS class will equal the percentage shown below of its proportionate share, based on the principal balances of its group’s target-rate classes, of scheduled and unscheduled principal payments on the related pool’s target-rate strip allocated to the group’s target-rate classes for that distribution day. distribution day percentage 0 - 60 0% 61 - 72 30% 73 - 84 40% 85 - 96 60% 97 - 108 80% 109 and after 100%

NAS classes. Classes IX-0, XX-0, XX-00 and IA-15 are non-accelerated senior, or NAS classes. For the first 60 distribution days, the principal allocation for a NAS class will be zero. For distribution day 61 and after, the principal allocation for each NAS class will equal the percentage shown below of its proportionate share, based on the principal balances of its group’s senior target-rate classes, of scheduled and unscheduled principal payments on the related pool’s target-rate strip allocated to the group’s senior target-rate classes for that distribution day. distribution day percentage 0 - 60 0% 61 - 72 30% 73 - 84 40% 85 - 96 60% 97 - 108 80% 109 and after 100%

NAS classes. Classes IX-0, XX-00 IA-5 and IA-15 IA-6 are non-accelerated senior, or NAS NAS, classes. For the first 60 distribution days, the principal allocation for a NAS class will be zero. For distribution day 61 and after, the principal allocation for each a NAS class will equal the following percentage shown below of its proportionate share, based on the principal balances of its group’s target-rate classes, of scheduled and unscheduled principal payments on the related pool’s target-rate strip allocated to the group’s target-rate classes for that distribution day. : distribution day percentage 0 - – 60 0% 61 - – 72 30% 73 - – 84 40% 85 - – 96 60% 97 - – 108 80% 109 and after 100%

NAS classes. Classes IX-0, XX-00 IA-4 and IA-15 IA-12 are non-accelerated senior, or NAS classes. For the first 60 distribution days, the principal allocation for a NAS class will be zero. For distribution day 61 and after, the principal allocation for each a NAS class will equal the following percentage shown below of its proportionate share, based on the principal balances of its group’s target-rate classesthe classes IA-1 and IA-3 through IA-14, of scheduled and unscheduled principal payments on the related pool’s target-rate strip allocated to the group’s target-rate classes IA-1 and IA-3 through IA-14 for that distribution day. : distribution day percentage 0 - – 60 0% 61 - – 72 30% 73 - – 84 40% 85 - – 96 60% 97 - – 108 80% 109 and after 100%

NAS classes. Classes IX-0, XX-00 and IA-15 are Class IA-4 is a non-accelerated senior, or NAS classes. For the first 60 distribution days, the principal allocation for a NAS class will be zero. For distribution day 61 and after, the principal allocation for each a NAS class will equal the following percentage shown below of its proportionate share, based on the principal balances of its the group’s senior target-rate classes, of scheduled and unscheduled principal payments on the related pool’s target-rate strip allocated to the group’s senior target-rate classes for that distribution day. : distribution day percentage 0 - 60 0% 61 - 72 30% 73 - 84 40% 85 - 96 60% 97 - 108 80% 109 and after 100%

NAS classes. Classes IX-0, XX-00 [**] and IA-15 [**] are non-accelerated senior, or NAS classes. For the first 60 distribution days, the principal allocation for a NAS class will be zero. For distribution day 61 and after, the principal allocation for each a NAS class will equal the following percentage shown below of [its proportionate share, based on the principal balances of its group’s the senior target-rate classes, of scheduled and unscheduled principal payments on the related pool’s target-rate strip allocated to the group’s senior target-rate classes for that distribution day. ]: distribution day percentage 0 - – 60 0% 61 - – 72 30% 73 - – 84 40% 85 - – 96 60% 97 - – 108 80% 109 and after 100%

NAS classes. Classes IX-0, XX-00 XX-0 and IA-15 IA-8 are non-accelerated senior, or NAS classes. For the first 60 distribution days, the principal allocation for a NAS class will be zero. For distribution day 61 and after, the principal allocation for each NAS class will equal the percentage shown below of its proportionate share, based on the principal balances of its group’s target-rate classes, of scheduled and unscheduled principal payments on the related pool’s target-rate strip allocated to the group’s target-rate classes for that distribution day. distribution day percentage 0 - 60 0% 61 - 72 30% 73 - 84 40% 85 - 96 60% 97 - 108 80% 109 and after 100%