how did the problem start
how do the problem start
pro:rel mod det:art n v
how did the problem start ?
h aʊ WORD_BOUNDARY d ɪ d WORD_BOUNDARY ð ə WORD_BOUNDARY p ɹ ɑː b l ə m WORD_BOUNDARY s t ɑː ɹ t WORD_BOUNDARY
h o w WORD_BOUNDARY d i d WORD_BOUNDARY t h e WORD_BOUNDARY p r o b l e m WORD_BOUNDARY s t a r t WORD_BOUNDARY