was ist da passiert
was sein da passieren
pro cop adv v
was ist da passiert ?
v a s WORD_BOUNDARY  ɪ s t WORD_BOUNDARY d aː WORD_BOUNDARY p a s iː ɐ t WORD_BOUNDARY
w a s WORD_BOUNDARY i s t WORD_BOUNDARY d a WORD_BOUNDARY p a s s i e r t WORD_BOUNDARY