aababaababaabaabbc [rev] aababaababaabaabcc [rev] aabbabbababbababbc [rev] aabbabbababbababcc [rev] aabbcbcbbcbcbbcbbc [rev] aabbccbccbcbccbcbc [rev] Number of Distinct Characters: 3 String Length: 18 Maximum Number of Squares: 12 Number of Unique Strings: 6 (not including reversible twins)