+
−
⟲
0 1 1 0
1 0 1 1
0 00 1
0 1 1 1
0 1 0 0
1
0
0
0
0 1 1 0
1 0 1 1
0 1 0 1
0 1 1 1
1
0
1
0
0 0 0 0