Letter/symbol frequency?
One of the other writing hobbies I have is lipograms–text that excludes a common letter of the alphabet. In English, the most commonly used letter is E, which makes it the hardest to exclude, and most often used in these kinds of challenges. There’s information about other languages here; often, vowels are the most common letter. I have a few short sample texts in my language, so I ran them through this frequency analyzer to see which were the most…