C31231211113313121211113313331333133313331213331333131332212121   >>    C3123121111331312121111331333133313331333121333133313133221212   <<    C31231211113313121211113313331333133313331213331333131332212123   >>      C31231211113313121211113313331333133313331213331333131332212122   >>