2
× 4
0
0
0
2
0
0
0
2
0
0
-1
× 4
2
0
0
-1
× 2
0
× 4
0
0
-1
× 2
0
× 2
0
0
-1
× 2
0
× 2
0
0
-1
× 2
0
× 2
0
0
0
× 2
0
0
0
× 2
0
0