Elixir Pattern Matching in Words - Part Three

In Elixir, I want to get all the information for pattern matching in words. So first I want to type these structs because I usually know what the structs I'm working in in different parts of the system. If I can type them, I can propagate more type information. And when we are comfortable, we are going to say, here's the type of language. But that's for me, like that's part three.