tokens: Vim will always highlight the next match with IncSearch , and all other matches ( of the same , currently typed pattern ) with the Search highlight group ( assuming you have :set hlsearch incsearch ) .
ner_tags: B-Application O O O O O O O B-Code_Block O O O O O O O O O O O O O O O O B-Code_Block O O O O O O B-Code_Block I-Code_Block I-Code_Block O O