m _ nm _ n _ an _ a _ ma _

The series is abadna/abadna/abadna/ab. Thus, the pattern 'abadna' is repeated.

The series is bcaa/bcaa/bcaa/bcaa. Thus, the pattern 'bcaa' is repeated.

The series is ccc bbb aaa/ccc bbb aaa/c. Thus, the pattern ccc bbb aaa is repeated.

The series is abb/abb/abb/abb. Thus, the pattern 'abb' is repeated.

The series is abncb/abncb/abncb. Thus, the pattern 'abncb' is repeated.

The series is bbccaa/ccaabb/aabbcc. Thus, the letter pairs move in a cyclic order.

The series is mopn/mopn/mopn/mopn. Thus, the pattern 'mopn' is repeated.