C11111333133313232233133313331333131133131121131211113313331313212331323132211   >>    C1111133313331323223313331333133313113313112113121111331333131321233132313221   <<    C11111333133313232233133313331333131133131121131211113313331313212331323132213   >>      C11111333133313232233133313331333131133131121131211113313331313212331323132212   >>