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