C11111333133313232233133313331333133313221333133313232112323112211221   >>    C1111133313331323223313331333133313331322133313331323211232311221122   <<    C11111333133313232233133313331333133313221333133313232112323112211223   >>      C11111333133313232233133313331333133313221333133313232112323112211222   >>