In one case, the students are told, "But you know, if you want to change your mind, I'll always have the other one here, and in the next four days, before I actually mail it to headquarters" -- yeah, "headquarters" -- (Laughter) "I'll be glad to swap it out with you.
Nun dos casos, díselles aos estudantes: "Xa sabes, se queres cambiar de idea, sempre vou ter eu aquí a outra, e nos seguintes catro días,  antes de enviala por correo á central..." Si, a central... "Estarei encantado de trocarcha.