*1:See also https://sumita-m.hatenadiary.com/entry/2020/03/06/111148 https://sumita-m.hatenadiary.com/entry/2020/03/30/011425 https://sumita-m.hatenadiary.com/entry/2021/06/06/073943 https://sumita-m.hatenadiary.com/entry/2022/01/30/041452 https://sumita-m.hatenadiary.com/entry/2022/07/12/121535 https://sumita-m.hatenadiary.com/entry/2022/12/08/225032
