Common use of NAS classes Clause in Contracts

NAS classes. Classes IA-7 and 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 · its proportionate share, based on the principal balances of the group’s target-rate classes, of scheduled principal payments on the related pool’s target-rate strip allocated to the group’s target-rate classes for that distribution day, plus · the following percentage of its proportionate share, based on principal balances of the group‘s target-rate classes, of 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 IA-7 IA-3 and IA-8 IA-4 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 · its proportionate share, based on the principal balances of the group’s target-rate classes, of scheduled principal payments on the related pool’s target-rate strip allocated to the group’s target-rate classes for that distribution day, plus · the following percentage of its proportionate share, based on principal balances of the group‘s target-rate classes, of 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 IA-7 IA-1 and IA-8 IA-2 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 · its proportionate share, based on the principal balances of the group’s target-rate classes, of scheduled principal payments on the related pool’s target-rate strip allocated to the group’s target-rate classes for that distribution day, plus · the following percentage of its proportionate share, based on principal balances of the group‘s target-rate classes, of 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 IA-7 IX-0, XX-00 and IA-8 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 NAS class will equal · its proportionate share, based on the principal balances of the group’s target-rate classes, of scheduled principal payments on the related pool’s target-rate strip allocated to the group’s target-rate classes for that distribution day, plus · the following percentage of its proportionate share, based on principal balances of the group‘s target-rate classes, of 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%