The English alphabet only includes 26 different letters, but for many other languages that are not descendant from Latin, the number of valid characters is much larger. It turns out that this can make creating a keyboard that works well in those languages a bit difficult — imagine having a keyboard with hundreds or thousands of keys and you begin to get the picture. That's why Google has developed dedicated keyboard apps with alternative input methods specifically designed for languages such as Pinyin or Cantonese to make is easier for many (or maybe even most) users around the world to type in their native tongue.

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