▒.▒.▒.▒ ▒.▒. 
             ............▒
            ▒▒.▒.▒.▒.▒.▒.▒
            ▒...>........▒
           ▒▒▒.▒.▒.▒.▒.▒.▒
            ............. 
▒▒▒▒▒▒▒▒▒▒▒▒▒▒.▒.▒.▒.▒.▒.▒
.......†.................▒
▒▒▒▒▒▒▒▒.....▒.▒.▒.▒.▒?▒.▒
       ▒<▒▒▒▒..g.........▒
       ▒.▒  ▒▒.▒.▒.▒.▒.▒.▒
       ▒.▒  ▒...........  
       ▒.▒  ▒▒.▒.▒.▒.▒.▒  
       ▒.▒   ▒▒.▒▒▒▒▒▒▒▒  
       ▒.▒    ▒.          
       ▒.▒    ▒.▒         
       ▒.▒    ▒▒▒