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  1. or download this
    perl -pe"s/-\w{2,}/ /g" infile > outfile
  2. or download this
    perl -i.bak -pe"s/-\w{2,}/ /g" file
  3. or download this
    while (<$fh_in>) {
   s/-\w{2,}/ /g;
   print $fh_out $_;
}