1 mm Wheat Chain

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