Taɣellist n tdukli tetteddu akka tura s uswir n usemmiḍ imi imḍebbren n tɣellist ttwalin belli ilaq ad d-sduklen tizemmar am tanekra n tdukli, asgunfu n yizri d useggem n yisental akken ad ssenqesent timsal n tgecrar. S useggas i d-iteddun, 70% n useggem n usgunfu d useggem d useggem n tnefsit ad ilin d isebtaren i yemsefhamen. Deg tegnit-a, d taɣellist n tdukli. Isebtaren-a llan d asdukel n teknasin yemgaraden yerna ttwasemman neɣ ttwaqqnen.