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