C12313211232233312111111312111133133313331323221312132231311212231   >>    C1231321123223331211111131211113313331333132322131213223131121223   <<    C12313211232233312111111312111133133313331323221312132231311212233   >>      C12313211232233312111111312111133133313331323221312132231311212232   >>