what is he thinking
what is he thinking ?
w ʌ t WORD_BOUNDARY ɪ z WORD_BOUNDARY h iː WORD_BOUNDARY θ ɪ ŋ k ɪ ŋ WORD_BOUNDARY
w h a t WORD_BOUNDARY i s WORD_BOUNDARY h e WORD_BOUNDARY t h i n k i n g WORD_BOUNDARY