C31231211111133131211113313331333133313121111121111331333132233132231   >>    C3123121111113313121111331333133313331312111112111133133313223313223   <<    C31231211111133131211113313331333133313121111121111331333132233132233   >>      C31231211111133131211113313331333133313121111121111331333132233132232   >>