they don't have any heads
they do have any head
pro:sub mod v qn n
they don't have any heads .
ð eɪ WORD_BOUNDARY d oʊ n t WORD_BOUNDARY h æ v WORD_BOUNDARY ɛ n i WORD_BOUNDARY h ɛ d z WORD_BOUNDARY
t h e y WORD_BOUNDARY d o n ' t WORD_BOUNDARY h a v e WORD_BOUNDARY a n y WORD_BOUNDARY h e a d s WORD_BOUNDARY