Asmeskel yellan gar wawalen-a deg uswir amsislan d umawalan, aswir amsislan yella-d s temlellit n teɣra [i] deg wawal amezwaru icenfiren yuɣalen [u] deg wawal wis sin icenfuren, ma yella deg uswir amawalan yella-d umgired deg uẓar gar wawalen, deg taddart n Bumnazel ssemrasen awal cwareb aẓar-is CWRB, maca deg snat tudrin awalen i ssemrasen sɛan yiwen uẓar CNFR (M. A. HADDADOU, 2003 : 02).