Yenna-d Nait-Zerrad.K.(2001:92): Llan kra n yemyagen isuddimen kkan-d seg yisem9 8HADDADOU MOHAND Akli, p79.on pris lhabitude, lasuite des smitisants,de distiguer,en berbre deux types drivations:la drivation dorientationet ladrivation de manire. 24