#g4 f3 z6

6x6
-1 1 0 0 0 0
-1 0 1 1 0 0
-1 0 1 0 0 0
-1 0 0 1 0 0
0 0 0 0 1 0
0 0 0 0 0 1

6x6
0 0 -1 0 0 0
-1 0 -1 1 0 0
-1 0 0 0 0 0
-1 1 -1 0 0 0
0 0 0 0 1 0
0 0 0 0 0 1

6x6
1 0 0 0 0 0
0 1 0 0 0 0
0 0 1 0 0 0
0 0 0 1 0 0
0 0 0 0 -1 0
0 0 0 0 0 1

6x6
1 0 0 0 0 0
0 1 0 0 0 0
0 0 1 0 0 0
0 0 0 1 0 0
0 0 0 0 1 0
0 0 0 0 0 -1

6x6
2 -1 0 0 0 0
-1 2 -1 -1 0 0
0 -1 2 0 0 0
0 -1 0 2 0 0
0 0 0 0 0 0
0 0 0 0 0 0

6x6
0 0 0 0 0 0
0 0 0 0 0 0
0 0 0 0 0 0
0 0 0 0 0 0
0 0 0 0 1 0
0 0 0 0 0 0

6x6
0 0 0 0 0 0
0 0 0 0 0 0
0 0 0 0 0 0
0 0 0 0 0 0
0 0 0 0 0 0
0 0 0 0 0 1

6x6
0 0 0 1 -1 0
0 0 0 0 -2 1
0 1 0 0 -1 0
0 0 1 0 -1 0
0 0 0 0 0 1
1 0 0 0 0 0

6x6
1 0 0 0 0 0
0 1 0 0 0 0
0 0 1 0 0 0
0 0 0 1 0 0
0 0 0 0 1 -1
0 0 0 0 1 1

6x6
1 0 0 0 0 0
0 0 0 0 0 1
0 1 0 0 0 0
0 0 1 0 0 0
0 0 0 1 1 1
0 0 0 -1 1 0

6x6
1 0 0 0 -1 0
0 1 0 0 0 1
0 0 1 0 0 1
0 0 0 1 0 1
0 1 0 0 0 -1
1 0 1 1 1 0

6x6
1 0 0 1 0 0
0 0 0 2 1 0
0 1 0 1 0 0
0 0 1 1 0 0
0 0 0 0 1 0
0 0 0 0 1 2

6 % forgotten centering in the original work of plesken and hanrath
 -1  0  0  0  0 -1
 -1 -1 -1 -1 -1 -1
  0  0  0 -1  0  0
  0  0  0  0 -1 -1
  1  1 -1  1  1  1
  1 -1  1  1  1 -1

2^9 * 3^2 =4608

