Five-O - Wikipedia

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• Where Does The Term 5-0 Or Five-O For Police Officers Come From?

• 50 - Urban Dictionary

• Why Are Cops Called 50? The 17 New Answer

• Why Are The Police Called The Five-O? - DSP Newsroom

• What Does 5 0 Mean?

• Why Are Police Officers Called Five Oh's? - Blurtit

• What Does "five O" Mean (and Why)? - English Stack Exchange

• Five-o - Wiktionary

• Why Are The Police Called The Five-O Or 50? - Webnews21

• CBS Explains Why It's 'Hawaii Five-0" And Not 'Hawaii-Five-O'

• Why Are Police Officers Called “12”? Its Origins Likely Date Back To ...

• Some Slang Words For Police - YourDictionary

• Book 'em: Here Are 15 Things You Never Knew About 'Hawaii Five-O'