Yewwi-d $ef ttawilat n ucebbeê iqburen ger ubeddel, nger d ukemmel n usexdem n ttawilat-agi. Di tazwara newwi-d awal $ef lma3na n ccbaêa $er tlawin id-nesseqsa, idyennan belli cbaêa $er tmettut maççi d udem kan ne$ d tafekka xas ma yella ûûenf-agi n cbaêa yeswa $er akk tlawin ma3na, cbaêa $er tmettut tesdukkel ula d ttrebga-ines d lêermaines imi d tinna i d cbaêa n ûûeê. $ef wayen ye3nan ttawilat n ucebbeê, nufa-d belli kra iruê usexdem-nsen ula $er tlawin itekkin $er tsutwin timenza 1920 d 1950, kra mazal-iten ma nebder-d taéult, ayen îellunt i wudem-nsent i wakken ad as-ksent kra n u$bel, aya-agi nufatid $er tisutwin n 1970 akked 1990 imi tilawin yettekkin $er tmezwura (1920, 1950) u$alent ur ttcebbiênet ara imi meqrent di la3mer. llan kra n ttawilat i mazal sexdament tsutwin n 1970 aked 1920 xas tta$ent-d ttawilat-agi itraren acku kra ur s3ant ara idrimen ara atentyeooen ad a$ent ayen êwaoent. S umata xas ma yella ttawilat iqburen atas deg-sen ruêen maca, asexdem-nsen mazal-it laba3da mi ara ad nebder isafaren yettwasxedmen i wakken ad heggin-t ttawilat iqburen, akka tura isafaren-agi sexdamen-ten di tesnay3it tamaynut ye3nan ttawilat n ucebbeê. Abeddel-agi id-yellan yurez $er ubeddel n tmetti.