@@@     @    @@@@   @@@   
@   @         @     @   @  
@   @  @@@@@  @@@   @   @  
 @@@       @     @   @@@   
@   @     @      @  @   @  
@   @     @   @  @  @   @  
 @@@     @     @@    @@@   
        @                  
        @     @        @