This page is auto-translated from [/nishio/ć¹ćć¼ć ć«ć¼ć 2 x 2](https://scrapbox.io/nishio/ć¹ćć¼ć ć«ć¼ć 2 x 2) using DeepL. If you looks something interesting but the auto-translated English is not good enough to understand it, feel free to let me know at @nishio_en. Iām very happy to spread my thought to non-Japanese readers.