👉 In computer science, a "letterset" is a set of characters that are used in a string or string-like data structure to represent individual characters. For example, if you have a string "hello", and you want to use it as an alphabet for a variable, you can define a letterset as follows: ``` letterset = ['h', 'e', 'l', 'o'] ``` The `letterset` is a list of 4 characters that represent the letters in