Current output
$VAR1 = 'nbu103 Disk 6 -1';
$VAR2 = 'nbu104 Disk 6 -1';
$VAR3 = '204_tape 1 1 ACS1';
$VAR4 = 'nbu101 Disk 6 -1';

Needed output 
$VAR1 = '103_dsu 1 35 nbu103 Disk 6 -1';
$VAR2 = '104_dsu 1 35 nbu104 Disk 6 -1';
$VAR3 = '204_tape 1 1 ACS1';
$VAR4 = '101_dsu 1 35 nbu101 Disk 6 -1';