au was ist das denn
au was ist das denn ?
 aʊ WORD_BOUNDARY v a s WORD_BOUNDARY  ɪ s t WORD_BOUNDARY d a s WORD_BOUNDARY d ɛ n WORD_BOUNDARY
a u WORD_BOUNDARY w a s WORD_BOUNDARY i s t WORD_BOUNDARY d a s WORD_BOUNDARY d e n n WORD_BOUNDARY