*1:See also https://sumita-m.hatenadiary.com/entry/20110829/1314590337 https://sumita-m.hatenadiary.com/entry/20120520/1337529330 https://sumita-m.hatenadiary.com/entry/20170415/1492273133 https://sumita-m.hatenadiary.com/entry/2019/11/27/084141 https://sumita-m.hatenadiary.com/entry/2021/02/19/085644 https://sumita-m.hatenadiary.com/entry/2021/02/25/101526 https://sumita-m.hatenadiary.com/entry/2021/12/30/095836 https://sumita-m.hatenadiary.com/entry/2022/01/03/124605 https://sumita-m.hatenadiary.com/entry/2022/01/24/020423 https://sumita-m.hatenadiary.com/entry/2022/02/16/143959 https://sumita-m.hatenadiary.com/entry/2022/02/22/165846 https://sumita-m.hatenadiary.com/entry/2022/03/07/131140 https://sumita-m.hatenadiary.com/entry/2022/03/10/164140 https://sumita-m.hatenadiary.com/entry/2022/03/14/143147 https://sumita-m.hatenadiary.com/entry/2022/03/22/091839 https://sumita-m.hatenadiary.com/entry/2022/03/26/044712 https://sumita-m.hatenadiary.com/entry/2022/03/31/233448 https://sumita-m.hatenadiary.com/entry/2022/04/12/162221 https://sumita-m.hatenadiary.com/entry/2022/12/20/125416 https://sumita-m.hatenadiary.com/entry/2023/01/04/234154
