they're both smiling aren't they
they both smile be they
pro:sub qn part aux pro:sub
they're both smiling aren't they?
ð eɪ ə WORD_BOUNDARY b əʊ θ WORD_BOUNDARY s m aɪ l ɪ ŋ WORD_BOUNDARY ɑː n tʰ WORD_BOUNDARY ð eɪ WORD_BOUNDARY
t h e y ' r e WORD_BOUNDARY b o t h WORD_BOUNDARY s m i l i n g WORD_BOUNDARY a r e n ' t WORD_BOUNDARY t h e y ? WORD_BOUNDARY