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