C312312111133131212111133133313331333133312133313331313331322121   >>    C31231211113313121211113313331333133313331213331333131333132212   <<    C312312111133131212111133133313331333133312133313331313331322123   >>      C312312111133131212111133133313331333133312133313331313331322122   >>