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