C31231211113313121211113313331333133313331213331333133313332213133313232231211   >>    C3123121111331312121111331333133313331333121333133313331333221313331323223121   <<    C31231211113313121211113313331333133313331213331333133313332213133313232231213   >>      C31231211113313121211113313331333133313331213331333133313332213133313232231212   >>