C31231211113313121211113313331333133313331213331333131133221211   >>    C3123121111331312121111331333133313331333121333133313113322121   <<    C31231211113313121211113313331333133313331213331333131133221213   >>      C31231211113313121211113313331333133313331213331333131133221212   >>