C312312111133131212111133133313331333133312133313113313331333221333132213221   >>    C31231211113313121211113313331333133313331213331311331333133322133313221322   <<    C312312111133131212111133133313331333133312133313113313331333221333132213223   >>      C312312111133131212111133133313331333133312133313113313331333221333132213222   >>