If you want to remove dup words from anywhere in the string rather than just consecutive duplicates, try: 

s/\w+\s*/$words{$&}++?'':$&/ge;

[download]
or to ignore case: 

s/\w+\s*/$words{"\L$&"}++?'':$&/ge;

[download]

In reply to Re: Re: Re: Duplicate Words by Anonymous Monk
in thread Duplicate Words by Anonymous Monk

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