they know all the letters
they know all the letter
pro:sub v qn det:art n
they know all the letters ?
ð eɪ WORD_BOUNDARY n oʊ WORD_BOUNDARY ɔ l WORD_BOUNDARY ð ə WORD_BOUNDARY l ɛ t ə ɹ z WORD_BOUNDARY
t h e y WORD_BOUNDARY k n o w WORD_BOUNDARY a l l WORD_BOUNDARY t h e WORD_BOUNDARY l e t t e r s WORD_BOUNDARY