C312312111133131212111133133313331333133312133313331333132321212311   >>    C31231211113313121211113313331333133313331213331333133313232121231   <<    C312312111133131212111133133313331333133312133313331333132321212313   >>      C312312111133131212111133133313331333133312133313331333132321212312   >>