C31231211113313121211113313331323133313331333133313331121211113313232211   >>    C3123121111331312121111331333132313331333133313331333112121111331323221   <<    C31231211113313121211113313331323133313331333133313331121211113313232213   >>      C31231211113313121211113313331323133313331333133313331121211113313232212   >>