Figure 6. QE continued until 1 year after inflation surged

From left to right, shadings indicate (1) loose monetary policy prior to the rise in inflation, (2) continued loose monetary policy after inflation accelerated, (3) monetary tightening and the deceleration of inflation, and (4) slowing of tightening and minimal progress on inflation.
Source: Board of Governors of the Federal Reserve System via the Federal Reserve Economic Database (FRED).