I don't think you really want that. It would give you a tab between Government and Access, and between Community and Bulletin and Board, and between Educational and Access, and so on.
I should re-state the criteria
any instance of "1-3 Numericals followed by a space..."
Replace with $1\t
Thank you Peter
591 replacements made, only about 20 rougue instances to clean up I (we) didn't forsee.