C312312111133131212111133133313331333133312133313113313332233132212311   >>    C31231211113313121211113313331333133313331213331311331333223313221231   <<    C312312111133131212111133133313331333133312133313113313332233132212313   >>      C312312111133131212111133133313331333133312133313113313332233132212312   >>