this is a hard one
this is a hard one .
ð ɪ s WORD_BOUNDARY ɪ z WORD_BOUNDARY ʌ WORD_BOUNDARY h ɑ ɹ d WORD_BOUNDARY w ʌ n WORD_BOUNDARY
t h i s WORD_BOUNDARY i s WORD_BOUNDARY a WORD_BOUNDARY h a r d WORD_BOUNDARY o n e WORD_BOUNDARY