ah ben c'est dur
ah ben être dur
co co v:aux adv
ah ben c'est dur .
a WORD_BOUNDARY b ɛ n WORD_BOUNDARY s ɛ WORD_BOUNDARY d y ʁ WORD_BOUNDARY
a h WORD_BOUNDARY b e n WORD_BOUNDARY c ' e s t WORD_BOUNDARY d u r WORD_BOUNDARY