what are they made of
what be they make of
pro:int cop pro:sub v prep
what are they made of ?
w ʌ t WORD_BOUNDARY ɑː ɹ WORD_BOUNDARY ð eɪ WORD_BOUNDARY m eɪ d WORD_BOUNDARY ʌ v WORD_BOUNDARY
w h a t WORD_BOUNDARY a r e WORD_BOUNDARY t h e y WORD_BOUNDARY m a d e WORD_BOUNDARY o f WORD_BOUNDARY