C312312111133131212111133133313331333133312133313331333131221232321   >>    C31231211113313121211113313331333133313331213331333133313122123232   <<    C312312111133131212111133133313331333133312133313331333131221232323   >>      C312312111133131212111133133313331333133312133313331333131221232322   >>