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