they both ran very fast
they both run very fast
pro:sub post v adv adv
they both ran very fast .
ð eɪ WORD_BOUNDARY b əʊ θ WORD_BOUNDARY ɹ a n WORD_BOUNDARY v ɛ ɹ i WORD_BOUNDARY f a s t WORD_BOUNDARY
t h e y WORD_BOUNDARY b o t h WORD_BOUNDARY r a n WORD_BOUNDARY v e r y WORD_BOUNDARY f a s t WORD_BOUNDARY