Did you know when you write to someone in Puerto Rico the abbreviation has the same letters as element 59, Parseodymium. Yes, both use a letter 'P' and a letter 'R.' Consequently this opens up the Puerto Rico to a fun elemental 59 flag for Praseodymium. Try to say that three times really fast! The only difference between the Pr flag and PR is, instead of single star, we have a single atom.
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