Alphabet Soup...

Hey, soup is good for you! Here is the Brain Bender for Thursday. via the handy dandy discount MENSA calendar. Ready to play?

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The 18 letters below can be anagrammed into a five word phrase meaning "try it out."

What is the phrase?

A E E F G H I L L N O P P R T T U U

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Alrighty, you know what to do. The answer will be found later in the comments. See you then!