                                     256                                         120                                          
                                                     

        8                                   
        16                                                            
        32                                                                                                                  
        
                     
 
                                                                                                                                                                                                                                                                                                                                                                                                                                     
                                                                                                                                                                                                                                                                                                                  
                                                                                                                                         
                                                                     
        
               