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