%hash = (31123 => 1,
         31456 => 2,
         32123 => 3,
         32456 => 4,
         33    => 5,
         3361  => 6,
         ...
         );

##</code><code>##

%hash = (31123 => 1,
         31456 => 2,
         32123 => 3,
         32456 => 4,
         33*   => 5,
         3361* => 6,
         ...
         );