C312312111133131212111133133313331333133312133313331333223313113311   >>    C31231211113313121211113313331333133313331213331333133322331311331   <<    C312312111133131212111133133313331333133312133313331333223313113313   >>      C312312111133131212111133133313331333133312133313331333223313113312   >>