Chain

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