It's a list of things they can't do because the list of things they can do is practically nonexistent.

her qualifications for the Supreme Court are nonexistent.

If they follow these guidelines the risk is basically nonexistent.

She was involved in nonexistent or fraudulent real estate transactions.

If you look at some of my stuff, the syntax is almost nonexistent. You don't have normal sentences, and there's a reason for that because normal sentences can't do what I would like to do.

First of all, the chances that both guys are there (at the 13th pick) is virtually nonexistent. The chances that one of those guys would be there is very, very slight. If that were to happen, I would imagine the phones would be ringing pretty steadily.