that's what I didn't understand
that what I do understand
pro:dem pro:int pro:sub mod v
that's what i didn't understand .
ð æ t s WORD_BOUNDARY w ʌ t WORD_BOUNDARY aɪ WORD_BOUNDARY d ɪ d n t WORD_BOUNDARY ʌ n d ɚ s t æ n d WORD_BOUNDARY
t h a t ' s WORD_BOUNDARY w h a t WORD_BOUNDARY i WORD_BOUNDARY d i d n ' t WORD_BOUNDARY u n d e r s t a n d WORD_BOUNDARY