C31231211113313121211113313331333133313331213331333133313332213133313233123231   >>    C3123121111331312121111331333133313331333121333133313331333221313331323312323   <<    C31231211113313121211113313331333133313331213331333133313332213133313233123233   >>      C31231211113313121211113313331333133313331213331333133313332213133313233123232   >>