they're not birds they're ducks
they not bird they duck
pro:sub neg n pro:sub n
they're not birds they're ducks.
ð eɪ ə ɹ WORD_BOUNDARY n ɑ t WORD_BOUNDARY b ɜː d z WORD_BOUNDARY ð eɪ ə ɹ WORD_BOUNDARY d ʌ k s WORD_BOUNDARY
t h e y ' r e WORD_BOUNDARY n o t WORD_BOUNDARY b i r d s WORD_BOUNDARY t h e y ' r e WORD_BOUNDARY d u c k s . WORD_BOUNDARY