the diphthong /e?/ as in ace and key, typically when ⟨a⟩ is followed by one, or at times two, consonants and after that A further vowel letter—this benefits from Center English lengthening accompanied by the Great Vowel Shift aA bA cA dA eA fA gA hA iA jA kA lA mA nA oA pA qA rA s