"Nah. You guys aren't Umbridge, yeah? I mean...if you are, you should really warn a bloke." He laughed for a moment. "If we tried to tell the people we weren't supposed to tell, we got in trouble. If we'd wanted to get them into the DA, we'd have been fine."
He nodded at Su, holding it out to her. "Yeah. Take a look. It showed numbers. A date, usually. We met in the Room of Requirement so we didn't need to use words. We just needed to know when we were meeting. Usually date and time were what we worked with." He smiled a little. "Cho Chang was one of your housemates, yeah? She was in with us."
He nodded a little. "Yeah. I'll start a list, then. He grabbed for his sketchpad, starting to write down the names with one of his pencils. There were so many people. Around fifteen of the members, not including the trio, were from Gryffindor alone. Those ones were easy to remember. Then there was Luna, Cho, Parvati's twin, Zacharias, and a few others.