18:05 >perl 579_SoPW.pl
Original big array:
$VAR1 = [
          'a',
          'b',
          'c',
          'd'
        ];
$VAR2 = [
          '1',
          '2',
          '3',
          '4'
        ];
$VAR3 = [
          'x1',
          'x2',
          'x3',
          'x4'
        ];

Resultant big array:
$VAR1 = [
          'a',
          'b',
          'd'
        ];
$VAR2 = [
          '1',
          '2',
          '4'
        ];
$VAR3 = [
          'x1',
          'x2',
          'x4'
        ];

Deleted element: x3
Modified sample1:
$VAR1 = 'a';
$VAR2 = 'b';
$VAR3 = 'd';

Modified sample2:
$VAR1 = '1';
$VAR2 = '2';
$VAR3 = '4';

Modified sample3:
$VAR1 = 'x1';
$VAR2 = 'x2';
$VAR3 = 'x4';

18:05 >