I still don't understand how it happened
I still do understand how it happen
pro:sub adv mod v pro:int pro:per v
i still don't understand how it happened .
aɪ WORD_BOUNDARY s t ɪ l WORD_BOUNDARY d oʊ n t WORD_BOUNDARY ʌ n d ɚ s t æ n d WORD_BOUNDARY h aʊ WORD_BOUNDARY ɪ t WORD_BOUNDARY h æ p ə n d WORD_BOUNDARY
i WORD_BOUNDARY s t i l l WORD_BOUNDARY d o n ' t WORD_BOUNDARY u n d e r s t a n d WORD_BOUNDARY h o w WORD_BOUNDARY i t WORD_BOUNDARY h a p p e n e d WORD_BOUNDARY