"Sometimes." The word sounded like it should have been accompanied by a shrug, but the brown pony just tilted his head a little. "They're not always the same, the kind, I mean. Sometimes it is just a simple one - but it's usually hard, since most people who come by tend to be pretty good at those by now. There's a blackboard over there -" he gestured toward a small blackboard by one of the walls, well-worn even from this distance and despite being a quite thoroughly inanimate object looking like it was casually leaning against the wall. " - if it's something more complicated."