Exhibit 31 Re: FFMLT Trust 2006-FF4 (the "Trust") Mortgage Pass-Through Certificates, Series 2006-FF4, issued pursuant to the Pooling and Servicing Agreement, dated as of March 1, 2006 (the "Pooling and Servicing Agreement"), among GS Mortgage...Pooling and Servicing Agreement • April 2nd, 2007 • FFMLT Trust 2006-Ff4 • Asset-backed securities
