C31231211111211111312133313331333133313331333133321123231323331323223322121   >>    C3123121111121111131213331333133313331333133313332112323132333132322332212   <<    C31231211111211111312133313331333133313331333133321123231323331323223322123   >>      C31231211111211111312133313331333133313331333133321123231323331323223322122   >>