C12313211232233312111111312111133133313331322122223113313232131   >>    C1231321123223331211111131211113313331333132212222311331323213   <<    C12313211232233312111111312111133133313331322122223113313232133   >>      C12313211232233312111111312111133133313331322122223113313232132   >>