C31231211111133131211113313331312111113331311331333133313232233133313221231111   >>    C3123121111113313121111331333131211111333131133133313331323223313331322123111   <<    C31231211111133131211113313331312111113331311331333133313232233133313221231113   >>      C31231211111133131211113313331312111113331311331333133313232233133313221231112   >>