##################
 .....∩..∩........#
 .................#
 ...########......#
           ####...#
            #.##..#
            #..'..#
         .....##Z.#
.        ..####...#
....########......#
Z.................#
..................#
....########......#
Z##        ####...#
              ##..#
               #..#
              ##..#
           ####...#
      ######......#
      ............#
      Z...........#
      #############