C11111333133313232233133313331333131133131331121111133313232222121   >>    C1111133313331323223313331333133313113313133112111113331323222212   <<    C11111333133313232233133313331333131133131331121111133313232222123   >>      C11111333133313232233133313331333131133131331121111133313232222122   >>