what could he have done
what could he have do
pro:int mod pro:sub v part
what could he have done ?
w ʌ t WORD_BOUNDARY k ʊ d WORD_BOUNDARY h iː WORD_BOUNDARY h æ v WORD_BOUNDARY d ʌ n WORD_BOUNDARY
w h a t WORD_BOUNDARY c o u l d WORD_BOUNDARY h e WORD_BOUNDARY h a v e WORD_BOUNDARY d o n e WORD_BOUNDARY