·········· ······
             ▒···▒····▒ ··?···
              ▒··▒····▒▒······
              ▒··▒·····▒······
         ▒▒▒▒▒▒···············
         ·····················
         ▒▒▒▒·················
▒·▒▒▒▒▒▒▒▒··O·····(···[·······
▒·····<·▒▒▒▒▒·▒··▒···†(·······
▒▒▒▒▒▒▒·▒   ▒·▒▒·····†···▒·▒··
      ▒·▒   ▒·▒▒·▒··········· 
      ▒·▒▒▒▒▒·▒▒·▒····▒··▒·▒··
      ▒··············▒▒······ 
      ▒·▒▒▒▒▒·▒▒·▒▒▒·······▒▒·
      ▒·▒▒·······▒ ▒▒▒▒·▒▒▒▒  
      ▒·▒▒▒▒▒·▒▒▒▒      ▒     
      ▒·▒   ▒·▒               
      ▒·▒▒▒▒▒·▒               
      ▒·······▒               
      ▒▒▒▒▒▒▒▒▒