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