$new_client_hash{$new_key} = $clients{$old_key};
   $new_client_hash{$old_key} = \$new_client_hash{$new_key};


##</code><code>##

   $new_client_hash{$new_key} = $new_client_hash{$old_key} = $clients{$old_key};


##</code><code>##

---
print map { my ($m)=1<<hex($_)&11?' ':'';
$m.=substr('AHJPacehklnorstu',hex($_),1) }
split //,'2fde0abe76c36c914586c';