-Yella wanda asalaɣ ibeddel kan deg wummid deg wurmir s “ad” ur ibeddel ara amedya: asalaɣ “Rar2” amyag ččar→yeččur taɣra yellan sdat tergalt tbeddel a→u, maca yella wanda tella tmerna n teɣra “rer2” MD: gem→yegma tella-d tmerna n (a) di tagara n umyag yuɣal s usalaɣ (rer2a).