*1:See also https://sumita-m.hatenadiary.com/entry/2020/12/04/123636 https://sumita-m.hatenadiary.com/entry/2021/01/02/091246 https://sumita-m.hatenadiary.com/entry/2021/12/30/095836 https://sumita-m.hatenadiary.com/entry/2022/01/11/102753 https://sumita-m.hatenadiary.com/entry/2022/07/01/235511 https://sumita-m.hatenadiary.com/entry/2023/08/09/094323 https://sumita-m.hatenadiary.com/entry/2024/05/14/144301
