In this version of motion capture, there are only two “scenes” with fire fairies in them. We can call them Scene 1 and Scene 2. If you watch the panel carefully, you can see these two scenes alternate back and forth. See if you can find cases where a fire fairy appears to move left to right. Then look for another where the fairy is moving more up and down. (The scene is generated randomly, so I can't tell you just where to look.)