*1:See also https://sumita-m.hatenadiary.com/entry/20130417/1366211836 https://sumita-m.hatenadiary.com/entry/2020/02/23/115654 https://sumita-m.hatenadiary.com/entry/2020/12/28/071837 https://sumita-m.hatenadiary.com/entry/2021/01/08/091259 https://sumita-m.hatenadiary.com/entry/2021/02/05/014636 https://sumita-m.hatenadiary.com/entry/2021/05/17/082524 https://sumita-m.hatenadiary.com/entry/2021/09/18/201123 https://sumita-m.hatenadiary.com/entry/2022/01/09/142858 https://sumita-m.hatenadiary.com/entry/2022/03/01/220332 https://sumita-m.hatenadiary.com/entry/2024/01/19/134515 https://sumita-m.hatenadiary.com/entry/2024/05/06/002531 https://sumita-m.hatenadiary.com/entry/2024/05/30/114516 https://sumita-m.hatenadiary.com/entry/2024/07/01/191049 https://sumita-m.hatenadiary.com/entry/2024/07/24/190022 https://sumita-m.hatenadiary.com/entry/2024/09/26/112308 https://sumita-m.hatenadiary.com/entry/2025/06/29/101726 https://sumita-m.hatenadiary.com/entry/2025/09/24/103954
