#!/usr/bin/perl
use strict;
use warnings;

my $file1 = <<FILE;
chirac prime paris
chirac prime jacques
chirac prime president 
chirac paris france
chirac paris french
FILE
my $file2 = <<FILE;
chirac presidential migration 
chirac presidential paris 
chirac prime president
chirac presidential 007
chirac paris migration 
chirac paris french
FILE

#open my $inA, '<', $ARGV[0] or die "Can;t open $ARGV[0]: $!\n";
#open my $inB, '<', $ARGV[1] or die "Can;t open $ARGV[0]: $!\n";
open my $inA, '<', \$file1;
open my $inB, '<', \$file2;

#print "bonjour\n";
#print "choose the output file name\n";
#
#chomp(my $fic2 = <STDIN>);
#open my $outFile, '>', $fic2 or die "Can't create $fic2: $!\n";

my @aLines;

while (my $ligne = <$inA>) {
    chomp $ligne;
    push @aLines, lc($ligne);
}

while (my $che = <$inB>) {
    chomp $che;

    my @bWords = split(/\s/, $che);

    foreach my $kh (@aLines) {
        my @aWords = split(/\s/, $kh);
        my $total = 0;
        
        for my $bWord (@bWords) {
            my $matched;
            
            for my $aWord (@aWords) {
                $matched = $bWord eq $aWord;
                last if $matched;
            }

            $total++ if $matched;
        }

        #print the retrieved line
        #print $outFile "$.: $kh\n";
        print "$.: $kh\n";
    }
}

##</code><code>##

1: chirac prime paris
1: chirac prime jacques
1: chirac prime president 
1: chirac paris france
1: chirac paris french
2: chirac prime paris
2: chirac prime jacques
2: chirac prime president 
2: chirac paris france
2: chirac paris french
3: chirac prime paris
3: chirac prime jacques
3: chirac prime president 
3: chirac paris france
3: chirac paris french
4: chirac prime paris
4: chirac prime jacques
4: chirac prime president 
4: chirac paris france
4: chirac paris french
5: chirac prime paris
5: chirac prime jacques
5: chirac prime president 
5: chirac paris france
5: chirac paris french
6: chirac prime paris
6: chirac prime jacques
6: chirac prime president 
6: chirac paris france
6: chirac paris french