you didn't know that
you do know that
pro:per mod v pro:dem
you didn't know that ?
j uː WORD_BOUNDARY d ɪ d n t WORD_BOUNDARY n oʊ WORD_BOUNDARY ð æ t WORD_BOUNDARY
y o u WORD_BOUNDARY d i d n ' t WORD_BOUNDARY k n o w WORD_BOUNDARY t h a t WORD_BOUNDARY