DETAILED NOTES ON UPS

the diphthong /eɪ/ as in ace and main, commonly when ⟨a⟩ is accompanied by just one, or sometimes two, consonants and afterwards another vowel letter—this benefits from Center English lengthening accompanied by the Great Vowel ShiftWhile in the International Phonetic Alphabet, ⟨a⟩ is useful for the open up entrance unrounded vowel, ⟨ä