C31231211111133131211113313331333133312111133133313331333133313232112231   >>    C3123121111113313121111331333133313331211113313331333133313331323211223   <<    C31231211111133131211113313331333133312111133133313331333133313232112233   >>      C31231211111133131211113313331333133312111133133313331333133313232112232   >>