*1:See also https://sumita-m.hatenadiary.com/entry/2021/10/26/015106
*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 https://sumita-m.hatenadiary.com/entry/2020/10/20/102957 https://sumita-m.hatenadiary.com/entry/2020/10/30/110515 https://sumita-m.hatenadiary.com/entry/2020/11/02/123556 https://sumita-m.hatenadiary.com/entry/2020/11/06/151844 https://sumita-m.hatenadiary.com/entry/2020/11/07/230406 https://sumita-m.hatenadiary.com/entry/2020/11/09/155139 https://sumita-m.hatenadiary.com/entry/2020/11/17/110638 https://sumita-m.hatenadiary.com/entry/2020/11/23/001727 https://sumita-m.hatenadiary.com/entry/2020/12/15/101205 https://sumita-m.hatenadiary.com/entry/2020/12/19/163905 https://sumita-m.hatenadiary.com/entry/2020/12/21/094527 https://sumita-m.hatenadiary.com/entry/2020/12/22/140750 https://sumita-m.hatenadiary.com/entry/2020/12/30/102709 https://sumita-m.hatenadiary.com/entry/2021/01/12/094125 https://sumita-m.hatenadiary.com/entry/2021/02/04/083325 https://sumita-m.hatenadiary.com/entry/2021/02/11/075056 https://sumita-m.hatenadiary.com/entry/2021/02/16/083646 https://sumita-m.hatenadiary.com/entry/2021/02/17/090404 https://sumita-m.hatenadiary.com/entry/2021/02/26/190239 https://sumita-m.hatenadiary.com/entry/2021/03/04/092643 https://sumita-m.hatenadiary.com/entry/2021/03/05/084207 https://sumita-m.hatenadiary.com/entry/2021/03/07/023008 https://sumita-m.hatenadiary.com/entry/2021/03/16/145956 https://sumita-m.hatenadiary.com/entry/2021/03/18/084557 https://sumita-m.hatenadiary.com/entry/2021/03/22/140306 https://sumita-m.hatenadiary.com/entry/2021/04/04/153611 https://sumita-m.hatenadiary.com/entry/2021/04/08/024140 https://sumita-m.hatenadiary.com/entry/2021/04/12/100731 https://sumita-m.hatenadiary.com/entry/2021/04/18/125932 https://sumita-m.hatenadiary.com/entry/2021/04/19/082329 https://sumita-m.hatenadiary.com/entry/2021/04/19/185510 https://sumita-m.hatenadiary.com/entry/2021/04/20/102544 https://sumita-m.hatenadiary.com/entry/2021/04/29/135031 https://sumita-m.hatenadiary.com/entry/2021/05/06/084544 https://sumita-m.hatenadiary.com/entry/2021/05/17/081247 https://sumita-m.hatenadiary.com/entry/2021/05/21/104651 https://sumita-m.hatenadiary.com/entry/2021/05/25/003335 https://sumita-m.hatenadiary.com/entry/2021/05/28/025255 https://sumita-m.hatenadiary.com/entry/2021/05/29/084037 https://sumita-m.hatenadiary.com/entry/2021/06/05/092007 https://sumita-m.hatenadiary.com/entry/2021/06/12/084143 https://sumita-m.hatenadiary.com/entry/2021/06/15/005626 https://sumita-m.hatenadiary.com/entry/2021/06/19/100246 https://sumita-m.hatenadiary.com/entry/2021/06/21/020624 https://sumita-m.hatenadiary.com/entry/2021/07/09/085121 https://sumita-m.hatenadiary.com/entry/2021/07/12/002828 https://sumita-m.hatenadiary.com/entry/2021/07/12/084437 https://sumita-m.hatenadiary.com/entry/2021/07/22/094413 https://sumita-m.hatenadiary.com/entry/2021/07/25/084754 https://sumita-m.hatenadiary.com/entry/2021/07/29/131256 https://sumita-m.hatenadiary.com/entry/2021/07/29/144804 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