what kind of sign
what kind of sign
pro:int n prep n
what kind of sign ?
w ʌ t WORD_BOUNDARY k aɪ n d WORD_BOUNDARY ʌ v WORD_BOUNDARY s aɪ n WORD_BOUNDARY
w h a t WORD_BOUNDARY k i n d WORD_BOUNDARY o f WORD_BOUNDARY s i g n WORD_BOUNDARY