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

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

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

$,=42;for(34,0,-3,9,-11,11,-17,7,-5){$*.=pack'c'=>$,+=$_}for(reverse s
+plit//=>$*
){$%++?$ %%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[$%++]}