C312312111133131212111133133313331333133312133313331333133313121111331322233111   >>    C31231211113313121211113313331333133313331213331333133313331312111133132223311   <<    C312312111133131212111133133313331333133312133313331333133313121111331322233113   >>      C312312111133131212111133133313331333133312133313331333133313121111331322233112   >>