1925 . Ϻ ȸȭ ϴٰ 1945 ͱ, ȭ翡 Ի α ȭλ ߴ. 1950 Żδ ϰ ѱ λ꿡 ù ǰ <Ǿ>(1952) . <> 뼺 ǰ ѱ ְ ڷμ Ȯ <θǽ>(1960), < մ Ӵ>(1961), <Ķ>(1964) Ʈ ǰ . Ƴ ̾ 1978 ϵǾ Ȱϴٰ 1986 Żߴ. < մ Ӵ>, < >, <>, < ݴ> 1ȸ, 4ȸ, 7ȸ 11ȸ ȭ Ͽ, < Ķ>, < >, < Ȥ>, < ΰ> 11, 12, 15, 17ȸ ƽþƿȭ Ͽ. 2ȸ ѹα ȭ λ DZ ߴ.
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