B:	They don't need to be masters of it,
b iː WORD_BOUNDARY ð eɪ WORD_BOUNDARY d oʊ n t WORD_BOUNDARY n iː d WORD_BOUNDARY t ə b i WORD_BOUNDARY m æ s t ə ɹ z WORD_BOUNDARY ʌ v WORD_BOUNDARY ɪ t WORD_BOUNDARY