A:	I don't think they're always necessary.
ʌ WORD_BOUNDARY aɪ WORD_BOUNDARY d oʊ n t WORD_BOUNDARY θ ɪ ŋ k WORD_BOUNDARY ð eɪ ə ɹ ɹ WORD_BOUNDARY ɔ l w eɪ z WORD_BOUNDARY n ɛ s ɪ s ə ɹ ɹ i WORD_BOUNDARY