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