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