10
2
0 
 1
2
0 
1 
4
1111
1111
1111
1111
4
0101
1010
0011
1100
4
00 0
  0 
  0 
1010
4
    
   1
   1
00  
4
  0 
    
1  1
1  1
4
  1 
    
1  1
1  1
8
        
        
        
        
        
        
        
        
8
  1  0  
 1  1   
 1    0 
    10  
  11    
  0   0 
      0 
  1 1