C312312111133131212111133133313331333133312133313113313221223221   >>    C31231211113313121211113313331333133313331213331311331322122322   <<    C312312111133131212111133133313331333133312133313113313221223223   >>      C312312111133131212111133133313331333133312133313113313221223222   >>