she didn't know how long
she do know how long
pro:sub mod v pro:int adv
she didn't know how long .
ʃ iː WORD_BOUNDARY d ɪ d n t WORD_BOUNDARY n oʊ WORD_BOUNDARY h aʊ WORD_BOUNDARY l ɔ ŋ WORD_BOUNDARY
s h e WORD_BOUNDARY d i d n ' t WORD_BOUNDARY k n o w WORD_BOUNDARY h o w WORD_BOUNDARY l o n g WORD_BOUNDARY