*1:See eg. https://ja.wikipedia.org/wiki/%E3%82%B9%E3%82%AB%E3%82%B7%E3%83%A6%E3%83%AA
*2:See also https://sumita-m.hatenadiary.com/entry/2020/06/27/020445 https://sumita-m.hatenadiary.com/entry/2020/08/27/022023 https://sumita-m.hatenadiary.com/entry/2020/11/18/141042 https://sumita-m.hatenadiary.com/entry/2020/11/23/214829 https://sumita-m.hatenadiary.com/entry/2020/11/28/091449 https://sumita-m.hatenadiary.com/entry/2021/01/31/132029 https://sumita-m.hatenadiary.com/entry/2021/08/05/080446 https://sumita-m.hatenadiary.com/entry/2021/11/18/142542 https://sumita-m.hatenadiary.com/entry/2021/11/27/135402 https://sumita-m.hatenadiary.com/entry/2022/05/08/164215 https://sumita-m.hatenadiary.com/entry/2022/12/12/142206 https://sumita-m.hatenadiary.com/entry/2022/12/14/090010 https://sumita-m.hatenadiary.com/entry/2023/03/03/152334 https://sumita-m.hatenadiary.com/entry/2024/03/08/154051
