0000905148-06-006915 Sample Contracts

EXHIBIT 99.4 ------------
Assignment Agreement • November 27th, 2006 • Alternative Loan Trust 2006-Oa18 • Asset-backed securities • New York
EXHIBIT 99.6 ------------
Item 1115 Agreement • November 27th, 2006 • Alternative Loan Trust 2006-Oa18 • Asset-backed securities • New York
EXHIBIT 99.3 ------------
Swap Contract Administration Agreement • November 27th, 2006 • Alternative Loan Trust 2006-Oa18 • Asset-backed securities • New York