Ilmend n A. LEHMAN d F. MARTIN-BERTHET( 2013 : 13) : Tasnalɣa tamawalant txeddam tazrawt tuddsa tinilɣawin (alɣan) n umawal ,tselleḍ taɣessa n umawal d wassaɣen n talɣa d unamek i yellan gar-asen21.