in one only
$VAR1 = [
          '1',
          '2',
          '3',
          '4',
          '5',
          '6',
          '7',
          '8',
          '9'
        ];

in two only
$VAR1 = [
          '21',
          '22',
          '23',
          '24',
          '25',
          '26',
          '27',
          '28',
          '29',
          '30',
          '31',
          '32',
          '33',
          '34',
          '35',
          '36',
          '37',
          '38',
          '39',
          '40'
        ];