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                      i~~00~~~.~.~77    $
       7~~~.~~~~..~~~...f~~~~D....~.     
       7.~~.~~~~..00~).~~~~~0~..~~~~     
      77.~~.~~~~..~~.7~7.~~~....~~0~     
   77 7...~~~0...~0..~....$.....~~~.     
 777~77.~~~~~~~~~~~~~~0~~77.........     
77*~~~77~~~~~~~~~0~~~~~~777..w~0....     
78~~~~~7~~~~~~~~~~~~~~~.~77.~0~..~0.     
 7v~.~~...~......~~~~~..777.t~~..7~7     
      7.~.~~..77.~~0*.~~~0.t~~~.77       
      7~......77~~~~..~~.F~7~~~<7        
      77..~..777.~~~.....~77~~<>~~       
       7.77777 7~~~~0.~..777.....~~      
       77~777  77.~~~.0777 77~...~~~     
       7~0~.7   77....77     .....0~     
       7~~~.7   7~~7.~777        .       
       7...77   77777~~.77               
      77.777       7~<~..7               
    7770.7         7....~7               
   77.~~.7         7777777               
   7.~~~.7                               
   7.~~~77                               
   77...7                                
    77777