Cluster Ring

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