OUTPUT 
n=20 
k=7 
 
C=[0 0 0 0 1 1 1 
0 0 0 1 0 1 1 
1 0 0 1 0 0 1 
1 0 0 0 1 0 1 
1 1 0 0 0 0 1 
1 0 1 0 0 0 1 
0 0 1 0 0 1 1 
0 1 1 0 0 1 0 
1 1 0 0 0 1 0 
1 1 0 1 0 0 0 
1 0 1 1 0 0 0 
0 0 1 1 0 1 0 
0 0 1 0 1 1 0 
1 0 1 0 1 0 0 
0 1 1 0 1 0 0 
0 0 1 0 1 0 1 
0 0 1 1 0 0 1 
0 1 0 1 0 0 1 
0 1 0 1 1 0 0 
0 1 0 0 1 1 0 ]
 
D=[1 1 1 0 0 0 0 
0 1 1 0 1 0 0 
0 1 1 0 0 1 0 
0 0 1 1 0 1 0 
0 0 0 1 1 1 0 
0 1 0 1 1 0 0 
1 0 0 1 1 0 0 
0 0 0 1 1 0 1 
0 0 1 0 1 0 1 
0 0 0 0 1 1 1 
0 1 0 0 1 0 1 
1 1 0 0 0 0 1 
0 1 0 1 0 0 1 
0 0 0 1 0 1 1 
1 0 0 1 0 1 0 
1 1 0 0 0 1 0 
1 0 0 0 1 1 0 
1 0 1 0 0 1 0 
1 0 1 0 0 0 1 
1 0 1 1 0 0 0 ]
