C312312111133131212111133133313331333133312133313113313331312113313331322121211   >>    C31231211113313121211113313331333133313331213331311331333131211331333132212121   <<    C312312111133131212111133133313331333133312133313113313331312113313331322121213   >>      C312312111133131212111133133313331333133312133313113313331312113313331322121212   >>