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