and who's this oh knock knock
and who's this oh knock knock !
a n d WORD_BOUNDARY w o̞ s WORD_BOUNDARY t ʝ s WORD_BOUNDARY o̞ WORD_BOUNDARY k n o̞ k k WORD_BOUNDARY k n o̞ k k WORD_BOUNDARY
a n d WORD_BOUNDARY w h o ' s WORD_BOUNDARY t h i s WORD_BOUNDARY o h WORD_BOUNDARY k n o c k WORD_BOUNDARY k n o c k WORD_BOUNDARY ! WORD_BOUNDARY