Morsetto sella

    ***        *     *****   *******  ******    *****   
   *   *      **    *     *       *   *     *  *     *  
  *   * *    * *          *      *    *     *        *  
  *  *  *   *  *         *      *     ******       **   
  * *   *  *******     **      *      *     *        *  
   *   *       *     **       *       *     *  *     *  
    ***        *    *******  *        ******    *****