they're big aren't they
they big be they
pro:sub adj aux pro:sub
they're big aren't they ?
ð eɪ ɚ WORD_BOUNDARY b ɪ ɡ WORD_BOUNDARY ɑː ɹ n t WORD_BOUNDARY ð eɪ WORD_BOUNDARY
t h e y ' r e WORD_BOUNDARY b i g WORD_BOUNDARY a r e n ' t WORD_BOUNDARY t h e y WORD_BOUNDARY