C11111333133313232233133313331333133313331313113313131133132211211   >>    C1111133313331323223313331333133313331333131311331313113313221121   <<    C11111333133313232233133313331333133313331313113313131133132211213   >>      C11111333133313232233133313331333133313331313113313131133132211212   >>