Population exchange between Greece and Turkey 1923, most of the pre-war Greek population of Aegean Turkey had already fled. The exchange involved the remaining Greeks of central Anatolia (both Greek- and Turkish-speaking), Pontus and Kars. Thus of the 1,200,000 only c. 189,916 still remained in Turkey that time. In Greece, it was considered part of the events called the "Asia Minor Catastrophe" (). Significant refugee displacement and population movements had already occurred following the Balkan Wars, World War I, and the Turkish War of Independence. The convention affected the populations as follows: almost all Greek Orthodox Christians (Greek- or Turkish-speaking) of Asia Minor including the Greek
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