C312312111133131212111133133313331333133312133313331311132323231   >>    C31231211113313121211113313331333133313331213331333131113232323   <<    C312312111133131212111133133313331333133312133313331311132323233   >>      C312312111133131212111133133313331333133312133313331311132323232   >>