*1:See also https://sumita-m.hatenadiary.com/entry/2019/04/03/234148 https://sumita-m.hatenadiary.com/entry/2019/09/25/125927 https://sumita-m.hatenadiary.com/entry/2019/12/31/021336 https://sumita-m.hatenadiary.com/entry/2020/01/20/010454 https://sumita-m.hatenadiary.com/entry/2020/01/21/094316 https://sumita-m.hatenadiary.com/entry/2020/02/22/101659 https://sumita-m.hatenadiary.com/entry/2020/02/24/020139 https://sumita-m.hatenadiary.com/entry/2020/02/25/082434 https://sumita-m.hatenadiary.com/entry/2020/02/26/133826 https://sumita-m.hatenadiary.com/entry/2020/02/28/015144 https://sumita-m.hatenadiary.com/entry/2020/03/06/112620 https://sumita-m.hatenadiary.com/entry/2020/03/07/235540 https://sumita-m.hatenadiary.com/entry/2020/03/29/105231 https://sumita-m.hatenadiary.com/entry/2020/04/09/211214 https://sumita-m.hatenadiary.com/entry/2020/05/04/094101 https://sumita-m.hatenadiary.com/entry/2020/05/07/125500 https://sumita-m.hatenadiary.com/entry/2020/05/19/151623 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https://sumita-m.hatenadiary.com/entry/2021/07/29/133149 https://sumita-m.hatenadiary.com/entry/2021/08/02/012738 https://sumita-m.hatenadiary.com/entry/2021/08/13/021124 https://sumita-m.hatenadiary.com/entry/2021/08/16/105018 https://sumita-m.hatenadiary.com/entry/2021/08/27/092128 https://sumita-m.hatenadiary.com/entry/2021/09/02/143839 https://sumita-m.hatenadiary.com/entry/2021/09/04/105326