C31231211113313121211113313331333133313331213331333131333132212312121   >>    C3123121111331312121111331333133313331333121333133313133313221231212   <<    C31231211113313121211113313331333133313331213331333131333132212312123   >>      C31231211113313121211113313331333133313331213331333131333132212312122   >>