C31231211113313121211113313331333133313331213331333131133132211211   >>    C3123121111331312121111331333133313331333121333133313113313221121   <<    C31231211113313121211113313331333133313331213331333131133132211213   >>      C31231211113313121211113313331333133313331213331333131133132211212   >>