Valideringskod
 *****   *     *  ******   *     *  *******  
*     *   *   *   *     *   *   *   *        
*     *    * *    *     *    * *    ******   
 ******     *     ******      *           *  
      *    * *    *           *           *  
     *    *   *   *           *     *     *  
 ****    *     *  *           *      *****