Ilmend n LEHMANN (A)&BERTHET .F.M(2000:167): Asuddes d asileɣ n wawalamaynut n useddukel n snat n tayunin timawalanin ilmend n yilugan n tseddast akken ad twasileɣ tayunt tamawalant tamaynut.1 2.5.2.1.Llant snat n tsekkiwin n usuddes 2.5.2.1.1. Asuddes i yettilin s tenzeɣt