Yella-d umyadef ajerruman s ufmidi n (15.8%), anda awalen i d-yudfen ama d ismawen uɣ alen fen lqaleb n tutlayt n tmaziɣ t, ama d imyagen ttwaftin ilmend n tseftit n tmaziɣ t akken i d-nufa llant ula d tinzaɣ , imerna akked yimeqqimen udfen-d deg tenfalit n tmaziɣ t.