Why does the Uyghur input method have 26 letters?

There are many characters in the world whose alphabet consists of more than 30 letters. Some languages have unique pronunciations, so when they are written or transcribed into Latin letters, they must be marked with symbols. Because most countries have 26 letters, because this can be used in popular language, and the letters are sticky. Therefore, Uyghur calligraphy has 26 letters, which is unusual for ministries.