C31231211113313121211113313331333133313331213331322331311331311331311233132211   >>    C3123121111331312121111331333133313331333121333132233131133131133131123313221   <<    C31231211113313121211113313331333133313331213331322331311331311331311233132213   >>      C31231211113313121211113313331333133313331213331322331311331311331311233132212   >>