C12313211232233312111111312111133133313331323133313331122332321122223113131   >>    C1231321123223331211111131211113313331333132313331333112233232112222311313   <<    C12313211232233312111111312111133133313331323133313331122332321122223113133   >>      C12313211232233312111111312111133133313331323133313331122332321122223113132   >>