Two ways:

c:\@Work\Perl\monks>perl -wMstrict -MData::Dumper -le
"my $aref = [
   [ 'kept',    82 ],
   [ 'notkept',  1 ],
   [ 'repaired', 3 ],
   ];
 print Dumper $aref;
 ;;
 for my $i (0 .. $#$aref) {
   printf qq{label $aref->[$i][0]  };
   }
 print qq{\n ---------};
 ;;
 for my $aref_2nd_level (@$aref) {
   printf qq{label $aref_2nd_level->[0]  };
   }
"
$VAR1 = [
          [
            'kept',
            82
          ],
          [
            'notkept',
            1
          ],
          [
            'repaired',
            3
          ]
        ];

label kept  label notkept  label repaired
 ---------
label kept  label notkept  label repaired
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