they leap fast don't they
they leap fast do they
pro:sub v adv mod pro:sub
they leap fast don't they ?
ð eɪ WORD_BOUNDARY l iː p WORD_BOUNDARY f æ s t WORD_BOUNDARY d oʊ n t WORD_BOUNDARY ð eɪ WORD_BOUNDARY
t h e y WORD_BOUNDARY l e a p WORD_BOUNDARY f a s t WORD_BOUNDARY d o n ' t WORD_BOUNDARY t h e y WORD_BOUNDARY