and what did the helicopter do
and what do the helicopter do
coord pro:int mod det:art n v
and what did the helicopter do ?
æ n d WORD_BOUNDARY w ʌ t WORD_BOUNDARY d ɪ d WORD_BOUNDARY ð ə WORD_BOUNDARY h ɛ l ɪ k ɑː p t ɚ WORD_BOUNDARY d uː WORD_BOUNDARY
a n d WORD_BOUNDARY w h a t WORD_BOUNDARY d i d WORD_BOUNDARY t h e WORD_BOUNDARY h e l i c o p t e r WORD_BOUNDARY d o WORD_BOUNDARY