Tusna$rit d yiwet seg tusniwin n tesnalsit ;deg-s anadi yettawi-d $ef tiwuriwin n yiferdisen n tutlayt, mac akra n yiferdisen ttwa3ezlen, ur s3in ara azal deg unadi, ladxa ccna d useqseê. Di tmazi$t, am di tutlayin nniven, ccna d useqseê ttwaverfen. $as ulamma ccna yebda yetta$ amkan deg unadi, aseqseê yegra-d di rrif, maca kra n yimassanen 3erven ad messlayen fella-s amdya : Chaker (2000 ), Louali ( ), Wilms ( ), Vysichel( )…