what kind of walls
what kind of wall
pro:int n prep n
what kind of walls ?
w ʌ t WORD_BOUNDARY k aɪ n d WORD_BOUNDARY ʌ v WORD_BOUNDARY w ɔː l z WORD_BOUNDARY
w h a t WORD_BOUNDARY k i n d WORD_BOUNDARY o f WORD_BOUNDARY w a l l s WORD_BOUNDARY