was willst du aufbauen
was wollen du bauen
pro mod pro:per imp
was willst du aufbauen ?
v a s WORD_BOUNDARY v ɪ l s t WORD_BOUNDARY d uː WORD_BOUNDARY  aʊ f b aʊ ə n WORD_BOUNDARY
w a s WORD_BOUNDARY w i l l s t WORD_BOUNDARY d u WORD_BOUNDARY a u f b a u e n WORD_BOUNDARY