nhacaiuytinproasia

 ooooo   ooooooo  oooooo   o        
o     o  o        o     o  o        
o     o  o        o     o  o        
 oooooo  oooo     oooooo   o        
      o  o        o   o    o        
     o   o        o    o   o        
 oooo    ooooooo  o     o  ooooooo