C31231211113313121211113313331333133313331213331333133313332213133313232113121   >>    C3123121111331312121111331333133313331333121333133313331333221313331323211312   <<    C31231211113313121211113313331333133313331213331333133313332213133313232113123   >>      C31231211113313121211113313331333133313331213331333133313332213133313232113122   >>