C12313211232233312111111312111133133313331323133313332322321122113111   >>    C1231321123223331211111131211113313331333132313331333232232112211311   <<    C12313211232233312111111312111133133313331323133313332322321122113113   >>      C12313211232233312111111312111133133313331323133313332322321122113112   >>