C31231211111211111312133313331333133313331333133321123231323331323232233221   >>    C3123121111121111131213331333133313331333133313332112323132333132323223322   <<    C31231211111211111312133313331333133313331333133321123231323331323232233223   >>      C31231211111211111312133313331333133313331333133321123231323331323232233222   >>