I know who jumped
I know who jump
pro:sub v pro:int part
i know who jumped .
aɪ WORD_BOUNDARY n oʊ WORD_BOUNDARY h uː WORD_BOUNDARY d̠ʒ ʌ m p t WORD_BOUNDARY
i WORD_BOUNDARY k n o w WORD_BOUNDARY w h o WORD_BOUNDARY j u m p e d WORD_BOUNDARY