Please examine that photo where the student enclosed the cake closely. Some photos of futsal also. If some photos are collated with an important log, the answer will be found.
I think that you are a person who classified those students into 3 groups.
It is not possible already to write it in usual writing excluding the specified student. For instance, Hankaku-kun. There are 4 students who are called Hankaku-kun that I know.
First, sort it in date. How to examine information in the photo, please question with the news4vip. For, there is a person who judges the photo in the news4vip.