*1:See also https://sumita-m.hatenadiary.com/entry/20130408/1365437101 https://sumita-m.hatenadiary.com/entry/20150724/1437745163 https://sumita-m.hatenadiary.com/entry/2019/07/19/143942 https://sumita-m.hatenadiary.com/entry/2019/08/15/204221 https://sumita-m.hatenadiary.com/entry/2020/02/01/082038 https://sumita-m.hatenadiary.com/entry/2020/02/02/133228 https://sumita-m.hatenadiary.com/entry/2020/02/12/020430 https://sumita-m.hatenadiary.com/entry/2020/02/13/095451 https://sumita-m.hatenadiary.com/entry/2020/02/15/083534 https://sumita-m.hatenadiary.com/entry/2020/03/01/093003 https://sumita-m.hatenadiary.com/entry/2020/03/08/000805 https://sumita-m.hatenadiary.com/entry/2020/03/08/145537 https://sumita-m.hatenadiary.com/entry/2020/03/09/141737 https://sumita-m.hatenadiary.com/entry/2020/03/18/081633 https://sumita-m.hatenadiary.com/entry/2020/03/23/023106 https://sumita-m.hatenadiary.com/entry/2020/03/27/142245 https://sumita-m.hatenadiary.com/entry/2020/04/02/095218 https://sumita-m.hatenadiary.com/entry/2020/04/11/093405 https://sumita-m.hatenadiary.com/entry/2020/04/15/010741 https://sumita-m.hatenadiary.com/entry/2020/04/16/225156 https://sumita-m.hatenadiary.com/entry/2020/04/19/104243 https://sumita-m.hatenadiary.com/entry/2020/04/28/215915 https://sumita-m.hatenadiary.com/entry/2020/05/04/133542 https://sumita-m.hatenadiary.com/entry/2020/05/06/110825
