C31231211113313112133313331311331333133313331333133313331333133313331121231211   >>    C3123121111331311213331333131133133313331333133313331333133313331333112123121   <<    C31231211113313112133313331311331333133313331333133313331333133313331121231213   >>      C31231211113313112133313331311331333133313331333133313331333133313331121231212   >>