C31231211113313112133313331311331333133313331333133313311232223321   >>    C3123121111331311213331333131133133313331333133313331331123222332   <<    C31231211113313112133313331311331333133313331333133313311232223323   >>      C31231211113313112133313331311331333133313331333133313311232223322   >>