out1 out2
x x
x x
x x
x x
1 0
0 0
1 0
0 0
1 1
0 0
1 1
0 1
1 0
0 1
1 0
0 0
0 0
0 0
0 0
0 0
0 1
0 1
0 1
0 1
0 1
0 0
0 1
0 0
0 0
0 1
0 0
0 1
0 0
0 0
0 0
0 0
1 1
1 1
1 1
1 1
1 0
1 0