C312312111133131212111133133313331333133312133313223313113322311   >>    C31231211113313121211113313331333133313331213331322331311332231   <<    C312312111133131212111133133313331333133312133313223313113322313   >>      C312312111133131212111133133313331333133312133313223313113322312   >>