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