1.   However, Greenspan also said the Fed is willing to keep reducing interest rates until the economy starts churning again.

2.   Investors could take some encouragement from Greenspan, who reiterated that the Fed is willing to keep reducing interest rates until the economy starts churning again.

3.   Investors took some encouragement from Greenspan, who reiterated Thursday that the Fed is willing to keep reducing interest rates until the economy starts churning again.

4.   Investors could take some encouragement from Greenspan, who reiterated Thursday that the Fed is willing to keep reducing interest rates until the economy starts churning again.