Chain

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