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