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