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