*1:See also https://sumita-m.hatenadiary.com/entry/2022/03/17/091431 https://sumita-m.hatenadiary.com/entry/2022/03/26/090226 https://sumita-m.hatenadiary.com/entry/2022/03/29/023205 https://sumita-m.hatenadiary.com/entry/2022/04/17/101213
*2:See also https://sumita-m.hatenadiary.com/entry/2022/04/12/165009