C312312111133131212111133133313331333133312133313331333132231133131333121   >>    C31231211113313121211113313331333133313331213331333133313223113313133312   <<    C312312111133131212111133133313331333133312133313331333132231133131333123   >>      C312312111133131212111133133313331333133312133313331333132231133131333122   >>