what have they been eating
what have they be eat
pro:int v pro:sub aux part
what have they been eating ?
w ʌ t WORD_BOUNDARY h æ v WORD_BOUNDARY ð eɪ WORD_BOUNDARY b ɪ n WORD_BOUNDARY iː ɾ ɪ ŋ WORD_BOUNDARY
w h a t WORD_BOUNDARY h a v e WORD_BOUNDARY t h e y WORD_BOUNDARY b e e n WORD_BOUNDARY e a t i n g WORD_BOUNDARY