was isst es denn
was essen es denn
pro v pro:per adv
was isst es denn ?
v a s WORD_BOUNDARY  ɪ s t WORD_BOUNDARY  ɛ s WORD_BOUNDARY d ɛ n WORD_BOUNDARY
w a s WORD_BOUNDARY i s s t WORD_BOUNDARY e s WORD_BOUNDARY d e n n WORD_BOUNDARY