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