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