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