We're not talking about some new three-person handshake or four-person handshake. We're just talking about the traditional two people shake their right hands. And so there's one person, and there's another person that's party to it. And so you say, okay, there's four possibilities of one party. And if we assume people aren't shaking their own hands, which we are assuming, or they're always going to shake someone else's hand, then for the other party, there's only three other, for each of these four possibilities, who's this party, there's three possibilities, who's the other party. And so you might say that there's four times three handshakes. Since there's four times three, I guess you could say possible handshakes.