I could do 120 of these. I'll do two more. You could have CFB, and then you could have CBF. So in the permutation world, these are literally 12 of the 120 permutations. But what if all we cared about is the three people we're choosing to sit down, but we don't care in what order that they're sitting or in which chair they're sitting? So in that world, these would all be one. This is all the same set of three people if we don't care which chair they're sitting in.