C312312111133131212111133133313331333133312133313231333133313113313223113311   >>    C31231211113313121211113313331333133313331213331323133313331311331322311331   <<    C312312111133131212111133133313331333133312133313231333133313113313223113313   >>      C312312111133131212111133133313331333133312133313231333133313113313223113312   >>