10
6
1 1 1 0 0 0
1 1 0 1 0 0
1 0 1 0 1 0
1 0 0 1 0 1
1 0 0 0 1 1
0 1 1 0 0 1
0 1 0 1 1 0
0 1 0 0 1 1
0 0 1 1 1 0
0 0 1 1 0 1
rees_algebra
1 7
1 1 1 1 1 1 0
grading