prefixes

After the dust has settled of doing a few forum merges I'm cleaning up stuff. Can anybody suggest a query to run to find prefixes that are not assigned to any forums?

Developers: @Xon/@Fuhrmann Shows a list of prefixes in each forum. Go to AdminCP -> Options -> Prefix Forum Listing to set some options to customize the output! Go to Appearance -> Styles Properties -> Prefix Forum Listing to set some styles to customize the output! ### This addon is open...