##
### %results contains all of the words in both files.
### Words that appear in both files will have a value of '3'.
### Iterate over the %results keys and print only the
###   when the value is '3'.
##

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If a word appears once in the first file and twice in the second, the value will 5; if it appears 3 times in the second file ...

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In reply to Re^2: Extracting common words by BrowserUk
in thread Extracting common words by Anonymous Monk

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