out
0 
1 
0 
0 
1 
x
0 
1 
x 
1 
x 
1 
0 
1 
x 
x 
0 
x 
x 
0 
x 
0 
1 
0 
x 
x 
0 
x 
0 
0 
x 
x 
x 
x 
0 
x 
x 
x 