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