The lack of third members displayed for the ghūmnā to dhulnā sets does not imply that they do not exist but that they were simply not listed in the source literature (Snell & Weightman 1989:243).
ghūmnā 到 dhulnā 集合缺少第三個元素不意味著它們不存在只是它們沒有在來源文獻中列出（Snell & Weightman 1989，p.243）。