C312312111133131212111133133313331333133312133313113313331311331333132321233221   >>    C31231211113313121211113313331333133313331213331311331333131133133313232123322   <<    C312312111133131212111133133313331333133312133313113313331311331333132321233223   >>      C312312111133131212111133133313331333133312133313113313331311331333132321233222   >>