Chain

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