they used it for what
they use it for what
pro:sub v pro:per prep pro:int
they used it for what ?
ð eɪ WORD_BOUNDARY j uː z d WORD_BOUNDARY ɪ t WORD_BOUNDARY f ɔː ɹ WORD_BOUNDARY w ʌ t WORD_BOUNDARY
t h e y WORD_BOUNDARY u s e d WORD_BOUNDARY i t WORD_BOUNDARY f o r WORD_BOUNDARY w h a t WORD_BOUNDARY