Ɣer DUBOIS, J & ALL (2002, Sb. 110) :  Tisɣunin n tuqqna teqqnent awalen, agraw n wawalen, isumar n tefyar.40 Ɣer MAMMERI, M (1990, Sb. 96) :  Tisɣunin n tuqqna tteqqnent awal s wawal , neɣ asumer s asumer , maca i sin n wawalen neɣ isumar d ilelliyen: Md : ( neɣ akud ) neɣ : am  am  , lameɛna, atg . 41