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