C31231211111211111312133313331333133313331333133321123231323331323221212121   >>    C3123121111121111131213331333133313331333133313332112323132333132322121212   <<    C31231211111211111312133313331333133313331333133321123231323331323221212123   >>      C31231211111211111312133313331333133313331333133321123231323331323221212122   >>