######        
            ##....###      
            #......4###    
            ##..###W..#    
             ##..###4..#   
              ##..###...#  
               #...# #...# 
     #####     ##..#  #....
  ####...### ###...#   #...
 ##........###....##    ##.
##...............##        
#.............####         
#............##            
##..........##             
 ##.#....#.##              
  ####..####               
     #..##                 
     ##..##                
      ##..#                
     ##...#                
    ##...##                
    #...##                 
    #...##                 
    ##...#                 
    ##...##                
   ##.....##               
   #...∩...#               
   #.......#               
   ##..∩..##               
    ##...##                
     #####