C11111333133313232233133313331333133313331311331333133323223311   >>    C1111133313331323223313331333133313331333131133133313332322331   <<    C11111333133313232233133313331333133313331311331333133323223313   >>      C11111333133313232233133313331333133313331311331333133323223312   >>