C11111333133313232233133313331333131133132313331312133313233311   >>    C1111133313331323223313331333133313113313231333131213331323331   <<    C11111333133313232233133313331333131133132313331312133313233313   >>      C11111333133313232233133313331333131133132313331312133313233312   >>