she sent him a letter once
she send him a letter once
pro:sub v pro:obj det:art n adv
she sent him a letter once .
ʃ iː WORD_BOUNDARY s ɛ n t WORD_BOUNDARY h ɪ m WORD_BOUNDARY ɐ WORD_BOUNDARY l ɛ ɾ ɚ WORD_BOUNDARY w ʌ n s WORD_BOUNDARY
s h e WORD_BOUNDARY s e n t WORD_BOUNDARY h i m WORD_BOUNDARY a WORD_BOUNDARY l e t t e r WORD_BOUNDARY o n c e WORD_BOUNDARY