C12313211232233312111111312111133133313331323133313331122332321122111333211111   >>    C1231321123223331211111131211113313331333132313331333112233232112211133321111   <<    C12313211232233312111111312111133133313331323133313331122332321122111333211113   >>      C12313211232233312111111312111133133313331323133313331122332321122111333211112   >>