C12313211232233312111111312111133133313331323133313331122332321121312312131   >>    C1231321123223331211111131211113313331333132313331333112233232112131231213   <<    C12313211232233312111111312111133133313331323133313331122332321121312312133   >>      C12313211232233312111111312111133133313331323133313331122332321121312312132   >>