was baust du denn um
was bauen du denn um
pro:int v pro:per adv prep
was baust du denn um ?
v a s WORD_BOUNDARY b aʊ s t WORD_BOUNDARY d uː WORD_BOUNDARY d ɛ n WORD_BOUNDARY  ʊ m WORD_BOUNDARY
w a s WORD_BOUNDARY b a u s t WORD_BOUNDARY d u WORD_BOUNDARY d e n n WORD_BOUNDARY u m WORD_BOUNDARY