C7 you can make 2 different ways. You can use your E type. Right? So here's E7 and I'm going to bring that to the 8th fret. You're probably starting to see a pattern, right? The 8th fret is where C is. So here's C, and there's my 7. So here's C7. And I can also do that with my A7 chord, right? I'm going to take that shape and I'm going to bring that to the 3rd fret. All right. So here's my 3rd fret barre, my A7 shape, and now we've turned that into C7. And that's how you make C7 as a barre chord.