$ perl tst.pl
$VAR1 = {
          'ak12' => 'av12',
          'ak11' => 'av11'
        };
$VAR1 = {
          'ak22' => 'av22',
          'ak21' => 'av21'
        };
$VAR1 = {
          'hk2' => 'hv2',
          'hk1' => 'hv1'
        };