I didn't understand it from before
I do understand it from before
pro:sub mod v pro:per prep adv
i didn't understand it from before .
aɪ WORD_BOUNDARY d ɪ d n t WORD_BOUNDARY ʌ n d ɚ s t æ n d WORD_BOUNDARY ɪ t WORD_BOUNDARY f ɹ ʌ m WORD_BOUNDARY b ɪ f oː ɹ WORD_BOUNDARY
i WORD_BOUNDARY d i d n ' t WORD_BOUNDARY u n d e r s t a n d WORD_BOUNDARY i t WORD_BOUNDARY f r o m WORD_BOUNDARY b e f o r e WORD_BOUNDARY