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  1. or download this
     print map{ $_, "\t" } $key1, $key2,
        $hash1{ $key1 }{ $key2 }, 
        $hash2{ $key1 }{ $key2 },
        $hash3{ $key1 }{ $key2 };
     print "\n";
    
  2. or download this
     print $key1, "\t", $key2 "\t", 
        $hash1{ $key1 }{ $key2 }, "\t",
        $hash2{ $key1 }{ $key2 }, "\t",
        $hash3{ $key1 }{ $key2 }, "\n";