By 1944, no distinctions existed between the two series.
b aɪ WORD_BOUNDARY n aɪ n t iː n h ʌ n d ɹ ɪ d WORD_BOUNDARY f ɔ ɹ t i WORD_BOUNDARY f ɔ ɹ WORD_BOUNDARY n oʊ WORD_BOUNDARY d ɪ s t ɪ ŋ k ʃ ə n z WORD_BOUNDARY ɛ ɡ z ɪ s t ɪ d WORD_BOUNDARY b ɪ t w iː n WORD_BOUNDARY ð ə WORD_BOUNDARY t uː WORD_BOUNDARY s ɪ ɹ i z WORD_BOUNDARY