Cyrillic script consonants from the older Glagolitic alphabet for sounds not found in Greek. Tradition holds that Cyrillic and Glagolitic were formalized either by Saints Cyril and Methodius who brought Christianity to the southern Slavs, or by their disciples. Paul Cubberley posits that although Cyril may have codified and expanded Glagolitic, it was his students in the First Bulgarian Empire under Tsar Simeon the Great that developed Cyrillic from the Greek letters in the 890s as a more suitable script for church books. Later Cyrillic spread among other Slavic peoples, as well as among non-Slavic Vlachs. Cyrillic and Glagolitic were used for
Uyghur New Script official alphabet in China, but after the reintroduction of an Arabic-derived alphabet, , in 1982, there has been a huge decline in the use, and the majority of Uyghurs today use . For romanized Uyghur, the Latin script Uyghur Latin Yëziqi has become more common than . The letters in the UYY (Uyghur New Script) are, in order: Uyghur New Script ' (abbreviated UYY; literally "Uyghur New Script") or ' (literally "new script"; , , ; ; sometimes falsely rendered as "Yengi Yeziķ" or "Yengi Yezik̡"), is a Latin alphabet, with both Uniform Turkic Alphabet and Pinyin influence, used for