based on the <a href="/wiki/Cyrillic_script" title="Cyrillic script">Cyrillic script</a> and is derived from the alphabet of the <a href="/wiki/Old_Church_Slavonic" title="Old Church Slavonic">Old Church Slavonic</a> language. The alphabet has existed in its modern form since 1918 and consists of thirty-two letters. See also <a href="/wiki/Belarusian_Latin_alphabet" title="Belarusian Latin alphabet">Belarusian Latin alphabet</a> and <a href="/wiki/Belarusian_Arabic_alphabet" title="Belarusian Arabic alphabe