Population exchange between Greece and Turkey its native Greek-speaking Muslim citizens. By the end of 1922, the vast majority of native Asia Minor Greeks had fled the recent Greek genocide (1914–1922) and Greece's later defeat in the Greco-Turkish War (1919–1922). According to some calculations, during the autumn of 1922, around 900,000 Greeks arrived in Greece. According to Fridtjof Nansen, before the final stage, in 1922, of the 900,000 Greek refugees a third were from Eastern Thrace, with the other two thirds being from Asia Minor. The estimate for the Greeks living within the present day borders of Turkey in 1914 is 2.130 million a figure higher
Ancient Greek phonology and this cluster underwent metathesis early in the Ancient Greek period. Metathesis is likely in this case; clusters of a voiced stop and , like , do not occur in Ancient Greek, since they change to by assimilation (see below), while clusters with the opposite order, like , pronounced , do occur. Ancient grammarians, such as Aristotle in his "Poetics" and Dionysius Thrax in his Art of Grammar, categorized letters () according to what speech sounds ( 'elements') they represented. They called the letters for vowels ('pronounceable', singular ); the letters for the nasals, liquids, and , and the letters