C312312111133131212111133133313331333133312133313331333121111332233211   >>    C31231211113313121211113313331333133313331213331333133312111133223321   <<    C312312111133131212111133133313331333133312133313331333121111332233213   >>      C312312111133131212111133133313331333133312133313331333121111332233212   >>