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