*1:See also https://sumita-m.hatenadiary.com/entry/20101221/1292912515 https://sumita-m.hatenadiary.com/entry/20150730/1438223216 https://sumita-m.hatenadiary.com/entry/2020/12/23/133417 https://sumita-m.hatenadiary.com/entry/2020/12/27/101709 https://sumita-m.hatenadiary.com/entry/2021/01/03/030914 https://sumita-m.hatenadiary.com/entry/2021/02/06/185051 https://sumita-m.hatenadiary.com/entry/2021/03/30/081149 https://sumita-m.hatenadiary.com/entry/2021/12/25/172858 https://sumita-m.hatenadiary.com/entry/2022/01/20/153703 https://sumita-m.hatenadiary.com/entry/2022/02/16/203611 https://sumita-m.hatenadiary.com/entry/2022/11/17/121827 https://sumita-m.hatenadiary.com/entry/2023/03/06/124737 https://sumita-m.hatenadiary.com/entry/2023/09/19/090114 https://sumita-m.hatenadiary.com/entry/2023/09/24/130504 https://sumita-m.hatenadiary.com/entry/2023/09/28/104107 https://sumita-m.hatenadiary.com/entry/2023/10/07/101706 https://sumita-m.hatenadiary.com/entry/2024/01/23/110319 https://sumita-m.hatenadiary.com/entry/2024/02/29/153724
