#####        
   ≈≈#≈#≈≈######  
   P#.#.≈P≈P#P≈#  
   .≈.≈nZ.≈.≈.####
  ≈≈.≈≈≈.Z≈≈≈...≈#
        ##n##     
        #.n.#     
        #.∩.#     
        #∩..#     
        #####