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