C11111333133313232233133313331333133313331311331333133313121331121   >>    C1111133313331323223313331333133313331333131133133313331312133112   <<    C11111333133313232233133313331333133313331311331333133313121331123   >>      C11111333133313232233133313331333133313331311331333133313121331122   >>