There are 33 letters in the Cyrillic alphabet. There are 21 consonants, 10 vowels and two letters that make no sounds. Each letter has a capital and lowercase letter, and there is also a cursive version of this alphabet.
Named after St. Cyril, a Greek monk who brought language to Christian Converts in what is now Russia, the Cyrillic Alphabet has been in use since the early Middle Ages. In the early 18th century, the forms of each letter were regularized, removing some of their Greek specific roots. There were further letters removed in 1918. The Cyrillic alphabet is used by many Slavic countries, such as Russia and the Ukraine.