U+1F89 "ᾉ" Greek Capital Letter Alpha with Dasia and Prosgegrammeni Unicode Character

U+1F89 "ᾉ" Greek Capital Letter Alpha with Dasia and Prosgegrammeni is a polytonic Greek letter that combines the capital alpha with a rough breathing mark, known as dasia, indicating an initial aspirated sound, and a prosgegrammeni, a small iota subscript written adjacent to the letter to denote a long vowel sound in certain ancient Greek forms, typically representing a feminine noun or adjective in the dative case. This character is used in scholarly texts and editions of classical works to preserve the precise orthographic conventions of ancient Greek phonology and grammar, though it is rarely encountered in standard modern Greek writing.