C11111333133313232233133313331333133313331313113313131133132211   >>    C1111133313331323223313331333133313331333131311331313113313221   <<    C11111333133313232233133313331333133313331313113313131133132213   >>      C11111333133313232233133313331333133313331313113313131133132212   >>