The Federal Reserve provided multiple indications Wednesday that its run of ultraeasy policy since the beginning of the Covid pandemic is coming to a close, making aggressive policy moves in response to rising inflation. For one, the central bank said it will accelerate the reduction of its monthly bond purchases. The Fed will be buying $60 billion of bonds each month starting in January, half the level prior to the November taper and $30 billion less than it had been buying in December. The Fed was tapering by $15 billion a month in November, doubled that in December, then will accelerate the reduction further come 2022.

(Source: cnbc.com)

Despite the Fed will reduce its bond purchase, according to economic theory, explain how would the Fed purchase of bonds affect the monetary base? Use T-account in your illustration.