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