Llan daɣen yimazzagen ɣer J.DUBOIS d wiyad (1999; 485 )  tasmidegt d tussna i zerwen tadra n yismawen n yimukan, d wassaɣen n tutlayt nni neɣ d tutlaytin yellan sumata , tussnaya tebḍa ilmend n trakalt, llan daɣen n ismawen n yissafen [ Tasmanamant ] , n yismawen n yidurar [ Tismadrart temnaḍin .2 Ɣer M.A.haddadou (2012; 13)  tasmidegt iswi-is d tazrewt n yisem n adeg , d tanedfart n tesnilest tettwaks-d seg tesnisemt n tazrewt n ismawen imazlayen yesɛan atas n yismawen n wadeg , d tazrewt n yismawen n imdanen neɣ tismismident .Anekmart n tesnilest n tesmidegt txedem tasledt n talɣiwin is ,inumak-is tettaǧǧ-d later n temhazt-is timsislit ak d tesnamka 3 1.3Azal n tesmidegt