_.-'
                                 _.-'
                 _____________.-'________________
                /         _.-' O                /|
               /  i====_======O      __________/ /
              /  / _.-'      O      /     _   /|/
             /  / | p       o      /     (   / /
            /  /           O      /_________/ /
           /  L===========O                /|/
          /______________O________________/ /
     aos |________________________________|/