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     ▒·▒  
 ▒▒▒▒▒·▒▒▒
 ▒·······▒
     ▒<▒  
     ▒·▒  
     ▒Y▒  
     ▒·▒  
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     ···  
    ···▒▒ 
   =····  
  ··▒▒··  
 ··· ···  
···  ▒▒·▒