nxedmasen taseftit ɣer “ad” ha-ta acu i d-nufa : -Imyagen-agi llan s usalaɣ (rerr3i) deg talɣa taḥerfit mi sen-nexdem taseftit ɣer wummid , ibeddel usalaɣ yuɣal (rerr3a), taɣra yellan zzat targalt taneggarut tbeddel “i” tuɣal “a” i→a.