B:	and in, I think around nineteen eighty, uh, they changed the model
b iː WORD_BOUNDARY æ n d WORD_BOUNDARY ɪ n WORD_BOUNDARY aɪ WORD_BOUNDARY θ ɪ ŋ k WORD_BOUNDARY ə ɹ ɹ aʊ n d WORD_BOUNDARY n aɪ n t iː n WORD_BOUNDARY eɪ t i WORD_BOUNDARY ʌ WORD_BOUNDARY ð eɪ WORD_BOUNDARY t̠ʃ eɪ n d̠ʒ d WORD_BOUNDARY ð ə WORD_BOUNDARY m ɑ d ə l WORD_BOUNDARY