C31231211113313121211113313331333133313331213331333133313332213133313233112111   >>    C3123121111331312121111331333133313331333121333133313331333221313331323311211   <<    C31231211113313121211113313331333133313331213331333133313332213133313233112113   >>      C31231211113313121211113313331333133313331213331333133313332213133313233112112   >>