C11111333133313232233133313331333133313331311331333132312133121   >>    C1111133313331323223313331333133313331333131133133313231213312   <<    C11111333133313232233133313331333133313331311331333132312133123   >>      C11111333133313232233133313331333133313331311331333132312133122   >>