###            ####     
 ##.##          ##..####  
##...#         ##......## 
#....##        #...####.##
#..∩..##   #####....#.#..#
#......## ##..#..........#
#.......###.#............#
#..∩...#...###..........##
#.....###### #.#.......## 
#...###      ####.....##  
##.##           ##...##   
 ###            ###'###   
                #.'.'.#   
                ###.###   
                #.z.'.#   
                ###.###   
                  +.+     
                  #.#     
                  +.+     
                  #.#     
                  +.+