C312312111133131212111133133313331333133312133313331333121133132213332321121   >>    C31231211113313121211113313331333133313331213331333133312113313221333232112   <<    C312312111133131212111133133313331333133312133313331333121133132213332321123   >>      C312312111133131212111133133313331333133312133313331333121133132213332321122   >>