How do I search/filter for images with a pending dupe?

I tried a forum search; got nothing relevant.
 
What’s the syntax to type in the search field to exclude images which have a pending auto-detected duplicate?

There generally aren’t more than 10 images with pending dupe reports at any one time…

@The Smiling Pony  
Noted.
 
So, is it even possible?

@Background Pony #164F  
No.