C31231211113313121211113313331333133313331213331333133313221322311   >>    C3123121111331312121111331333133313331333121333133313331322132231   <<    C31231211113313121211113313331333133313331213331333133313221322313   >>      C31231211113313121211113313331333133313331213331333133313221322312   >>