C31231211113313112133313331311331333133313311211111211113322332211311   >>    C3123121111331311213331333131133133313331331121111121111332233221131   <<    C31231211113313112133313331311331333133313311211111211113322332211313   >>      C31231211113313112133313331311331333133313311211111211113322332211312   >>