C31231211111133131211113313331333121111133313331333133313331333133313232131211   >>    C3123121111113313121111331333133312111113331333133313331333133313331323213121   <<    C31231211111133131211113313331333121111133313331333133313331333133313232131213   >>      C31231211111133131211113313331333121111133313331333133313331333133313232131212   >>