Chain

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