And I'm going to show you what I'm going to show you in class, and I'm going to show you how to do this, and I'm going to show you what I'm going to do, and I'm going to show you what I'm going to do, and I'm going to show you what I'm going to do, and I'm going to show you what I'm going to do, and I'm going to show you what I'm going to do, and I'm going to show you what I'm going to do, and I'm going to show you what I'm going to do, and I'm going to show you what I'm going to show you.