back down the stairs
back down the stair
adv v det:art n
back down the stairs.
b æ kʰ WORD_BOUNDARY d aʊ n WORD_BOUNDARY ð ə WORD_BOUNDARY s tʰ eə z WORD_BOUNDARY
b a c k WORD_BOUNDARY d o w n WORD_BOUNDARY t h e WORD_BOUNDARY s t a i r s . WORD_BOUNDARY