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