what changes fast
what change fast
pro:int n adv
what changes fast ?
w ʌ t WORD_BOUNDARY t̠ʃ eɪ n d̠ʒ ɪ z WORD_BOUNDARY f æ s t WORD_BOUNDARY
w h a t WORD_BOUNDARY c h a n g e s WORD_BOUNDARY f a s t WORD_BOUNDARY