Yettili usebded n umawal, neɣ usileɣ- is s sin n iferdisen , asuddem d ussudes J. Dubois (1999;209) Nettsemmi i usileɣ n wawalen tagruma n yitewlen ilɣaseddasanen s wacu i dnessileɣ awalen , iwsilen n usuddem neɣ itewlen n usuddes .