*1:See also https://sumita-m.hatenadiary.com/entry/2021/11/29/191518
*2:See also https://sumita-m.hatenadiary.com/entry/20150730/1438223216 https://sumita-m.hatenadiary.com/entry/20170321/1490117707 https://sumita-m.hatenadiary.com/entry/20170511/1494477182 https://sumita-m.hatenadiary.com/entry/2019/12/02/001041 https://sumita-m.hatenadiary.com/entry/2020/01/04/235902 https://sumita-m.hatenadiary.com/entry/2020/01/16/024951 https://sumita-m.hatenadiary.com/entry/2020/01/22/082357 https://sumita-m.hatenadiary.com/entry/2020/02/01/082715 https://sumita-m.hatenadiary.com/entry/2020/02/13/210049 https://sumita-m.hatenadiary.com/entry/2020/02/14/221555 https://sumita-m.hatenadiary.com/entry/2020/02/16/131441 https://sumita-m.hatenadiary.com/entry/2020/02/27/130811 https://sumita-m.hatenadiary.com/entry/2020/03/07/101748 https://sumita-m.hatenadiary.com/entry/2020/03/18/100607 https://sumita-m.hatenadiary.com/entry/2020/03/24/104404 https://sumita-m.hatenadiary.com/entry/2020/04/10/220658 https://sumita-m.hatenadiary.com/entry/2020/05/15/143825 https://sumita-m.hatenadiary.com/entry/2020/05/25/082501 https://sumita-m.hatenadiary.com/entry/2020/05/29/144733 https://sumita-m.hatenadiary.com/entry/2020/06/01/221341 https://sumita-m.hatenadiary.com/entry/2020/06/12/002706 https://sumita-m.hatenadiary.com/entry/2020/06/25/090450 https://sumita-m.hatenadiary.com/entry/2020/06/29/105243 https://sumita-m.hatenadiary.com/entry/2020/07/08/004704 https://sumita-m.hatenadiary.com/entry/2020/07/22/100752 https://sumita-m.hatenadiary.com/entry/2020/07/23/083225 https://sumita-m.hatenadiary.com/entry/2020/07/28/125608 https://sumita-m.hatenadiary.com/entry/2020/08/10/013639 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/2020/09/05/170400 https://sumita-m.hatenadiary.com/entry/2020/09/07/001337 https://sumita-m.hatenadiary.com/entry/2020/10/04/093914 https://sumita-m.hatenadiary.com/entry/2020/10/18/005053 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https://sumita-m.hatenadiary.com/entry/2021/08/02/015948 https://sumita-m.hatenadiary.com/entry/2021/08/04/033718 https://sumita-m.hatenadiary.com/entry/2021/08/04/105202 https://sumita-m.hatenadiary.com/entry/2021/08/12/015237 https://sumita-m.hatenadiary.com/entry/2021/08/12/082803 https://sumita-m.hatenadiary.com/entry/2021/08/13/003544 https://sumita-m.hatenadiary.com/entry/2021/08/21/094046 https://sumita-m.hatenadiary.com/entry/2021/08/27/015957 https://sumita-m.hatenadiary.com/entry/2021/08/27/072502 https://sumita-m.hatenadiary.com/entry/2021/09/02/135146 https://sumita-m.hatenadiary.com/entry/2021/09/04/132540 https://sumita-m.hatenadiary.com/entry/2021/09/11/134937 https://sumita-m.hatenadiary.com/entry/2021/09/13/011104 https://sumita-m.hatenadiary.com/entry/2021/09/14/084907 https://sumita-m.hatenadiary.com/entry/2021/09/14/090049 https://sumita-m.hatenadiary.com/entry/2021/09/15/091037 https://sumita-m.hatenadiary.com/entry/2021/09/29/101020 https://sumita-m.hatenadiary.com/entry/2021/10/06/104137 https://sumita-m.hatenadiary.com/entry/2021/10/22/083736 https://sumita-m.hatenadiary.com/entry/2021/10/27/074834 https://sumita-m.hatenadiary.com/entry/2021/11/05/122946 https://sumita-m.hatenadiary.com/entry/2021/11/10/083855 https://sumita-m.hatenadiary.com/entry/2021/11/14/102601 https://sumita-m.hatenadiary.com/entry/2021/11/15/171257 https://sumita-m.hatenadiary.com/entry/2021/11/17/084134 https://sumita-m.hatenadiary.com/entry/2021/11/24/094910 https://sumita-m.hatenadiary.com/entry/2021/11/29/181348 https://sumita-m.hatenadiary.com/entry/2021/12/02/124454 https://sumita-m.hatenadiary.com/entry/2021/12/08/083146