CHAKER.S (1978 :179) yefka-d tabadut n usuddem ; yenna-d :«Asuddem ur yerzi arakan amawal maca ula d ayen yeɛnan taseddast ntefyar tumyigin ,tettakk-d aṭas n talɣiwin tisuddimin tikwal d allalen n taynalit».2 Ɣer tama n way-a yella usuddem anejrum (umyig,arumyig) yettusemersen ugar di taynallit, tuget ttefrurin-d deg umawal, yella daɣen usuddem n tɣara drus id-yettakk n talɣiwin tisuddimin ttili-d s tmerna n tergalin n umyag neɣ n yisem ma nessarwes-it d wid n teɣda .