C11111333133313232233133313331333131133131211113313113313331123131   >>    C1111133313331323223313331333133313113313121111331311331333112313   <<    C11111333133313232233133313331333131133131211113313113313331123133   >>      C11111333133313232233133313331333131133131211113313113313331123132   >>