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    my $string="one two one two";
    my @ones=$string=~m/\bone\b/g;
    my @twos=$string=~m/\btwo\b/g;
    print scalar(@ones) ,"\t\"ones\"\n",scalar (@twos),"\t\"twos\"\n"; 
    print "Equal numbers\n" if (scalar (@ones)== scalar (@twos));'