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
Kadamba alphabet the Kannada script used differently (also known as Ganga script) in rock edicts and copper plate inscriptions. During 6th to 10th century, the Telugu-Kannada alphabet stabilized during the rule of the Chalukyas of Badami from 500-1000.) and Rastrakutas. The Old Kannada ("Halekannada") alphabet is the continuation of the Telugu-Kannada alphabet used to write Kannada and Telugu. Brahmi -> Kadamba -> Old Kannada -> Kannada and Telugu scripts Goykanadi, Bhattiprolu script, Salankayana script, Pallava script and Gupta script a family of alphasyllabaries or abugidas has some similarity. "Sinhala script" is closely related to Grantha script and Old Khmer script (closely related