-Ussid : /ww/→/bbʷ/ , /ggʷ/.Md: yewwa lexrif→yebbwa lexrif→yeggwa lexrif→ -Tamsertit : - n+w →bbʷ, ggʷ , ww MD:aɣanim n waman→ aɣanim bbwaman / n+y→gg, yy MD: tadekkart n yeɣzer→tadekkart ggeɣzer→tedekkart yyeɣzer.