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