Tameɣrut tettbeddil seg usefru ɣer wayeḍ, llan kra n yisefra sɛan yiwet n tmeɣrut segmi ara yebdu usefru alamma yekfa ( a,a,b ,ab, ab, ab), llan isefra-nniḍzn tettbeddil tmeɣrut seg ufyir ɣer wayeḍ.