C31231211113313121211113313331333133313331213331333133313231122112233121   >>    C3123121111331312121111331333133313331333121333133313331323112211223312   <<    C31231211113313121211113313331333133313331213331333133313231122112233123   >>      C31231211113313121211113313331333133313331213331333133313231122112233122   >>