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