C31231211113313121211113313331333133313331213331333133312113313232212331   >>    C3123121111331312121111331333133313331333121333133313331211331323221233   <<    C31231211113313121211113313331333133313331213331333133312113313232212333   >>      C31231211113313121211113313331333133313331213331333133312113313232212332   >>