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