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  1. or download this
    
 my %hash2 =(
           '1' => 2,
           '3' => 5,
           '4' => 2,);
  2. or download this
    $VAR1  = 
{
...
          '1-4' => 4,
          '4-4' => 2,#ends here
};
  3. or download this
    use strict;
use warnings;
...
      }
  }
print Dumper \%spair;
  4. or download this
    $VAR1 = {
          '3-3' => 5,
...
          '1-3' => 10,#repeat
          '4-3' => 10 #repeat
        };