C12313211232233312111111312111133133313331323133313331122332321122113112131   >>    C1231321123223331211111131211113313331333132313331333112233232112211311213   <<    C12313211232233312111111312111133133313331323133313331122332321122113112133   >>      C12313211232233312111111312111133133313331323133313331122332321122113112132   >>