uh knock knock who' s there
uh knock knock who' s there ?
u WORD_BOUNDARY k n o̞ k k WORD_BOUNDARY k n o̞ k k WORD_BOUNDARY w o̞ WORD_BOUNDARY s WORD_BOUNDARY t e̞ ɾ e̞ WORD_BOUNDARY
u h WORD_BOUNDARY k n o c k WORD_BOUNDARY k n o c k WORD_BOUNDARY w h o ' WORD_BOUNDARY s WORD_BOUNDARY t h e r e WORD_BOUNDARY ? WORD_BOUNDARY