dat is mijn pen he
dat is mijn pen he ?
d ɑ t WORD_BOUNDARY  ɪ s WORD_BOUNDARY m ɛɪ n WORD_BOUNDARY p ɛ n WORD_BOUNDARY h eː WORD_BOUNDARY
d a t WORD_BOUNDARY i s WORD_BOUNDARY m i j n WORD_BOUNDARY p e n WORD_BOUNDARY h e WORD_BOUNDARY