This property defines the Unicodes which are Pure Killer
Characters like ഻,഼,ฺ, etc. are listed under Pure Killer Indic Syllabic Category.
26 Characters are present in Pure Killer Indic Syllabic Category starting with the Unicode point U+0D3B that represents the character ഻.
Currently, as per latest version 15.0.0, Unicode supports 36 number of Indic Syllabic Category. Here are a few examples - Avagraha,Bindu,Brahmi Joining Number, etc.