they're silly aren't they
they silly be they
pro:sub adj aux pro:sub
they're silly aren't they ?
ð eɪ ɚ WORD_BOUNDARY s ɪ l i WORD_BOUNDARY ɑː ɹ n t WORD_BOUNDARY ð eɪ WORD_BOUNDARY
t h e y ' r e WORD_BOUNDARY s i l l y WORD_BOUNDARY a r e n ' t WORD_BOUNDARY t h e y WORD_BOUNDARY