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