C31231211113313121211113313331333133313331213331333133313223321211   >>    C3123121111331312121111331333133313331333121333133313331322332121   <<    C31231211113313121211113313331333133313331213331333133313223321213   >>      C31231211113313121211113313331333133313331213331333133313223321212   >>