What is the most efficient regular expression to delete the additional duplicates of all duplicated words within a string. i.e. to make "alpha beta beta gamma gamma gamma" into "alpha beta gamma". I'm trying : 
$string =~ s/(\w+)(.*)\b\1/$1 $2/sig;

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but it isn't even correct. efficiency is important since it will have to be done on many strings. any help is greatly appreciated. cheers, ntav

In reply to most efficient regex to delete duplicate words by Anonymous Monk

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