C31231211113313112133313331311331333133313331333133313311221323233121   >>    C3123121111331311213331333131133133313331333133313331331122132323312   <<    C31231211113313112133313331311331333133313331333133313311221323233123   >>      C31231211113313112133313331311331333133313331333133313311221323233122   >>