C31231211113313121211113313331333133313331213331333131133223332321   >>    C3123121111331312121111331333133313331333121333133313113322333232   <<    C31231211113313121211113313331333133313331213331333131133223332323   >>      C31231211113313121211113313331333133313331213331333131133223332322   >>