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the diphthong /eɪ/ as in ace and main, usually when ⟨a⟩ is followed by a single, or from time to time two, consonants and then A different vowel letter—this outcomes from Center English lengthening followed by the Great Vowel ShiftWithin the Global Phonetic Alphabet, ⟨a⟩ is employed for the open up front unrounded vowel, ⟨ä⟩ is usef