▒▒▒▒▒               
  ▒▒···▒▒              
 ▒▒·····▒▒             
 ▒·▒▒····▒▒▒▒▒▒▒▒▒     
 ▒·▒······▒▒·▒·▒·▒     
▒▒·▒▒······▒'▒'▒z▒╬▒╬▒▒
▒··▒·······'··········╬
▒··········▒'▒'▒╬▒╬▒╬▒▒
▒▒········▒▒·▒·▒       
 ▒▒······▒▒▒▒▒▒▒       
  ▒▒▒···▒▒             
    ▒▒···▒             
    ▒··▒▒▒             
    ▒·▒▒               
    ▒▒·▒▒              
     ▒▒·▒              
      ▒·▒              
     ▒▒·▒              
    ▒▒·▒▒              
   ▒▒···▒▒             
 ▒▒▒·····▒             
▒▒·······▒▒            
▒···∩··∩··▒▒           
▒▒·········▒           
 ▒▒·······▒▒           
  ▒▒▒▒▒▒▒▒▒