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