Universal Search question

When I type something into search, and the icons show up, I've noticed that (unless I only typed numbers like 439 in which case I would have to type a space), I can simply press the enter key, and the first search result icon will highlight, allowing me to simply press enter to open it. What I want to know is if there's a key press I can use to navigate to and highlight the next icon without using the trackpad. Is there like a "p" (previous) and "n" (next) shortcut combo I can use to move left and right amongst the icons?

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