00000000000
                  /           \                
                 /             \  
         00000000000000000000000000000000000000000000()
         00000000000000000000000000000000000000000000()
       ()00000000000000000000000000000000000000000000
             *    *0000000000000000000000 *    *
             *    *                       *    *
              *  *                         *  *