| and + inside a character class aren't special, they're just regular characters, so your regex would match "FO O|B+++A R". /[A-Z ]+/ (which is what I think you probably meant) won't work either.
Bonus points will be given if you tell us why!
Update: BrowserUK has already seen what was missing. You missed out AnonyMonk
In reply to Re^3: Extract sequence of UC words?
by FunkyMonk
in thread Extract sequence of UC words?
by Anonymous Monk
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