{Began to cast out} ((8872)xato ekballein). So  Mr 11:15 
whereas  Mt 21:12  has simply "he cast out." See Mark and Matthew
for discussion of this second cleansing of the temple at the
close of the public ministry in relation to the one at the
beginning in  Joh 2:14-22 . There is nothing gained by accusing
John or the Synoptics of a gross chronological blunder. There was
abundant time in these three years for all the abuses to be
revived.