C31231211113313121211113313331333133313331213331333133312111113223232231   >>    C3123121111331312121111331333133313331333121333133313331211111322323223   <<    C31231211113313121211113313331333133313331213331333133312111113223232233   >>      C31231211113313121211113313331333133313331213331333133312111113223232232   >>