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