*1:See also https://sumita-m.hatenadiary.com/entry/2019/11/21/163607 https://sumita-m.hatenadiary.com/entry/2020/01/01/123253 https://sumita-m.hatenadiary.com/entry/2020/01/04/162334 https://sumita-m.hatenadiary.com/entry/2020/01/06/092155 https://sumita-m.hatenadiary.com/entry/2020/01/14/094848 https://sumita-m.hatenadiary.com/entry/2020/01/14/095940 https://sumita-m.hatenadiary.com/entry/2020/01/26/110003 https://sumita-m.hatenadiary.com/entry/2020/01/28/133647 https://sumita-m.hatenadiary.com/entry/2020/01/30/214830 https://sumita-m.hatenadiary.com/entry/2020/02/05/012724 https://sumita-m.hatenadiary.com/entry/2020/02/07/005509 https://sumita-m.hatenadiary.com/entry/2020/02/09/100459 https://sumita-m.hatenadiary.com/entry/2020/02/09/125441 https://sumita-m.hatenadiary.com/entry/2020/02/11/082110 https://sumita-m.hatenadiary.com/entry/2020/02/13/095451 https://sumita-m.hatenadiary.com/entry/2020/02/14/011428 https://sumita-m.hatenadiary.com/entry/2020/02/23/140647 https://sumita-m.hatenadiary.com/entry/2020/02/23/210436 https://sumita-m.hatenadiary.com/entry/2020/02/26/094909 https://sumita-m.hatenadiary.com/entry/2020/03/01/093003 https://sumita-m.hatenadiary.com/entry/2020/03/02/082617 https://sumita-m.hatenadiary.com/entry/2020/03/02/085921 https://sumita-m.hatenadiary.com/entry/2020/03/05/033241 https://sumita-m.hatenadiary.com/entry/2020/03/11/221926 https://sumita-m.hatenadiary.com/entry/2020/03/18/081633 https://sumita-m.hatenadiary.com/entry/2020/03/25/090504 https://sumita-m.hatenadiary.com/entry/2020/03/26/025642