DESCRIPTION
今月中に終わらせたかったのですが、差分まで行けなかったので
出来た所までになります！すみません！
明日差分を作ろうと思います！
I wanted to finish it by the end of this month, but I couldn't get to the point of drawing the variations.
I'm afraid that's as far as I got! Sorry!
I'll try to make a diff tomorrow!