C31231211113313121211113313331333133313331213331333133311222331111   >>    C3123121111331312121111331333133313331333121333133313331122233111   <<    C31231211113313121211113313331333133313331213331333133311222331113   >>      C31231211113313121211113313331333133313331213331333133311222331112   >>