Expression : ABABACCB, ABABCCAB, ABACCBAB, ABCCABAB, ACCBABAB, _______________. The pattern followed is that in each term there are 3 combinations of 'AB' and in each term, there are 2 consecutive C's starting from second last position and shifting one place to the left. Thus, in the missing term, the first two terms will be CC = CCABABAB