This property defines the Unicodes which are used for positions between letters excluding those specifically listed as other values
Characters like A,B,C, etc. are listed under MidNumNum Word Break.
29489 Characters are present in MidNumNum Word Break starting with the Unicode point U+0041 that represents the character A.
Currently, as per latest version 15.0.0, Unicode supports 19 number of Word Break. Here are a few examples - Carriage Return,Double Quote,Exclamation, etc.