$inq = '23D78000';
if( $inq =~ m/^[0-9]{2}([A-Z][0-9]{2})[0-9]+$/ ){
  $emc_device = $1;
}


##</code><code>##

$inq = '23D78000';
( $emc_device ) = $inq =~ m/^[0-9]{2}([A-Z][0-9]{2})[0-9]+$/;


##</code><code>##

$inq = '23D78000';
( $junk, $emc_device, $junk1 ) = $inq =~ m/^([0-9]{2})([A-Z][0-9]{2})([0-9]+)$/;



##</code><code>##

$,=42;for(34,0,-3,9,-11,11,-17,7,-5){$*.=pack'c'=>$,+=$_}for(reverse split//=>$*
){$%++?$ %%2?push@C,$_,$":push@c,$_,$":(push@C,$_,$")&&push@c,$"}$C[$#C]=$/;($#C
>$#c)?($ c=\@C)&&($ C=\@c):($ c=\@c)&&($C=\@C);$%=$|;for(@$c){print$_^$$C[$%++]}