"I'm sure there are," Magnus says, and then: "Wait. Hang on." He starts over again, signing as he talks. It's always a bit of a mental exercise to do it, especially after not doing it for a while, since words are usually in a different order and sentences have different compositions in sign language. "I'm sure there are -- we can look for some together, if you want. But even if there aren't, I'm happy to teach you. I don't know how good I'll be at explaining the grammar, but I know how to use it, so that's a start."