Bill fell to his knees
Bill fall to his knee
n:prop v prep det:poss n
bill fell to his knees .
b ɪ l WORD_BOUNDARY f ɛ l WORD_BOUNDARY t ə WORD_BOUNDARY h ɪ z WORD_BOUNDARY n iː z WORD_BOUNDARY
b i l l WORD_BOUNDARY f e l l WORD_BOUNDARY t o WORD_BOUNDARY h i s WORD_BOUNDARY k n e e s WORD_BOUNDARY