what the heck is that
what the heck is that ?
w ʌ t WORD_BOUNDARY ð ə WORD_BOUNDARY h ɛ k WORD_BOUNDARY ɪ z WORD_BOUNDARY ð æ t WORD_BOUNDARY
w h a t WORD_BOUNDARY t h e WORD_BOUNDARY h e c k WORD_BOUNDARY i s WORD_BOUNDARY t h a t WORD_BOUNDARY