*1:See also https://sumita-m.hatenadiary.com/entry/2021/10/09/130644
*2:See also http://d.hatena.ne.jp/sumita-m/20140217/1392601359 http://d.hatena.ne.jp/sumita-m/20150730/1438223216 http://d.hatena.ne.jp/sumita-m/20161015/1476517356 http://d.hatena.ne.jp/sumita-m/20170321/1490117707 https://sumita-m.hatenadiary.com/entry/20170511/1494477182 https://sumita-m.hatenadiary.com/entry/2020/01/07/090924 https://sumita-m.hatenadiary.com/entry/2020/01/11/024638 https://sumita-m.hatenadiary.com/entry/2020/01/29/105001 https://sumita-m.hatenadiary.com/entry/2020/02/12/102228 https://sumita-m.hatenadiary.com/entry/2020/02/15/214804 https://sumita-m.hatenadiary.com/entry/2020/03/20/011854 https://sumita-m.hatenadiary.com/entry/2020/03/28/014141 https://sumita-m.hatenadiary.com/entry/2020/04/10/220658 https://sumita-m.hatenadiary.com/entry/2020/05/26/093420 https://sumita-m.hatenadiary.com/entry/2020/06/01/221341 https://sumita-m.hatenadiary.com/entry/2020/06/04/121802 https://sumita-m.hatenadiary.com/entry/2020/06/12/152643 https://sumita-m.hatenadiary.com/entry/2020/06/15/004926 https://sumita-m.hatenadiary.com/entry/2020/06/22/094736 https://sumita-m.hatenadiary.com/entry/2020/06/24/123312 https://sumita-m.hatenadiary.com/entry/2020/06/25/090450 https://sumita-m.hatenadiary.com/entry/2020/06/30/092732 https://sumita-m.hatenadiary.com/entry/2020/07/01/090159 https://sumita-m.hatenadiary.com/entry/2020/07/03/092013 https://sumita-m.hatenadiary.com/entry/2020/07/11/020349 https://sumita-m.hatenadiary.com/entry/2020/07/12/013457 https://sumita-m.hatenadiary.com/entry/2020/07/12/014545 https://sumita-m.hatenadiary.com/entry/2020/07/13/111818 https://sumita-m.hatenadiary.com/entry/2020/07/19/173034 https://sumita-m.hatenadiary.com/entry/2020/07/21/085702 https://sumita-m.hatenadiary.com/entry/2020/08/03/094413 https://sumita-m.hatenadiary.com/entry/2020/08/10/084030 https://sumita-m.hatenadiary.com/entry/2020/09/02/215451 https://sumita-m.hatenadiary.com/entry/2020/09/08/105952 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https://sumita-m.hatenadiary.com/entry/2021/07/28/083640 https://sumita-m.hatenadiary.com/entry/2021/08/03/012618 https://sumita-m.hatenadiary.com/entry/2021/08/04/105202 https://sumita-m.hatenadiary.com/entry/2021/08/05/083034 https://sumita-m.hatenadiary.com/entry/2021/08/19/090943 https://sumita-m.hatenadiary.com/entry/2021/08/27/015957 https://sumita-m.hatenadiary.com/entry/2021/09/04/110538 https://sumita-m.hatenadiary.com/entry/2021/09/08/101240 https://sumita-m.hatenadiary.com/entry/2021/09/13/011104 https://sumita-m.hatenadiary.com/entry/2021/09/16/104704 https://sumita-m.hatenadiary.com/entry/2021/09/18/111100 https://sumita-m.hatenadiary.com/entry/2021/09/21/201121 https://sumita-m.hatenadiary.com/entry/2021/09/25/085538 https://sumita-m.hatenadiary.com/entry/2021/10/01/163919 https://sumita-m.hatenadiary.com/entry/2021/10/03/005601 https://sumita-m.hatenadiary.com/entry/2021/10/04/075322 https://sumita-m.hatenadiary.com/entry/2021/10/05/090541 https://sumita-m.hatenadiary.com/entry/2021/10/07/085219 https://sumita-m.hatenadiary.com/entry/2021/10/13/012352 https://sumita-m.hatenadiary.com/entry/2021/10/17/014006 https://sumita-m.hatenadiary.com/entry/2021/10/23/105733 https://sumita-m.hatenadiary.com/entry/2021/10/24/110158 https://sumita-m.hatenadiary.com/entry/2021/10/27/072301 https://sumita-m.hatenadiary.com/entry/2021/10/27/074834 https://sumita-m.hatenadiary.com/entry/2021/11/07/081606