###    
         ###.###  
        ##.....## 
        #.......# 
        #.......# 
        #.......# 
         #.ZZZ.#  
           #.#    
           #M#    
 ##      ###Z###  
##Z.    ##.....## 
#....   #.......# 
#.....###...∩...##
M......+...∩∩∩...+
#.....###...∩...##
#....   #.......# 
##Z.    ##.....## 
 ##      ###.###  
           #+#