to the effects of the Armenian genocide. In addition, neither dialect is completely homogeneous: any dialect can be subdivided into several subdialects. Although Western and Eastern Armenian are often described as different dialects of the same language, many subdialects are not readily mutually intelligible. Nevertheless, a fluent speaker of one of two greatly varying dialects who is also literate in one of the standards, when exposed to the other dialect for a period of time will be able to understand the other with relative ease. Distinct Western Armenian varieties currently in use include Homshetsi, spoken by the Hemshin peoples; the dialects of Armenians of Kessab (Քեսապի բարբառ), Latakia and Jisr al-Shughur (Syria), Anjar, Lebanon, and Vakıflı, Samandağ (Turkey), part of the "Sueidia" dialect (Սուէտիայի բարբառ). Forms of the Karin dialect of Western Armenian are spoken by several hundred thousand people in Northern Armenia, mostly in Gyumri, Artik, Akhuryan, and around 130 villages in Shirak Province, and by Armenians in Samtskhe–Javakheti province of Georgia (Akhalkalaki, Akhaltsikhe). Nakhichevan-on-Don Armenians speak another Western Armenian variety based on the dialect of Armenians in Crimea, where they came from in order to establish the town and surrounding villages in 1779 (Նոր Նախիջևանի բարբառ). Western Armenian dialects are currently spoken also in Gavar (formerly Nor Bayazet and Kamo, on the west of Lake Sevan), Aparan, and Talin in Armenia (Mush dialect), and by the large Armenian population residing in Abkhazia, where they are considered to be the first or second ethnic minority, or even equal in number to the local Abkhaz population Orthography The Armenian alphabet ( or ) is a graphically unique alphabetical writing system that is used to write the Armenian language. It was introduced around AD 405 by Mesrop Mashtots, an Armenian linguist and ecclesiastical leader, and originally contained 36 letters. Two more letters, օ (ō) and ֆ (f), were added in the Middle Ages. During the 1920s orthography reform in Soviet Armenia, a new letter և (capital ԵՎ) was added, which was a ligature before ե+ւ, whereas the letter Ւ ւ was discarded and reintroduced as part of a new letter ՈՒ ու (which was a digraph before). This alphabet and associated orthography is used by most Armenian speakers of Armenia and the countries of the former Soviet Union. Neither the alphabet nor the orthography has been adopted by Diaspora Armenians, including Eastern Armenian speakers of Iran and all Western Armenian speakers,