20 16
 0 0 0 1 1 0 0 0 0 0 1 0 0 1 0 0
 0 0 1 0 1 0 0 0 0 1 0 0 0 0 0 1
 0 0 0 1 0 1 0 0 1 0 0 0 0 0 1 0
 0 0 1 0 0 1 0 0 0 0 0 1 1 0 0 0
 0 1 0 0 0 0 0 1 0 0 1 0 1 0 0 0
 0 1 0 0 0 0 1 0 1 0 0 0 0 0 0 1
 1 0 0 0 0 0 0 1 0 1 0 0 0 0 1 0
 1 0 0 0 0 0 1 0 0 0 0 1 0 1 0 0
 0 0 1 1 0 1 0 1 1 0 1 0 1 1 0 0
 0 0 1 1 0 1 1 0 2 0 0 0 0 1 0 1
 0 0 2 0 0 1 0 1 1 1 0 0 1 0 0 1
 0 1 0 1 2 0 0 0 0 1 1 0 0 0 1 1
 0 1 0 1 1 1 0 0 0 0 1 1 1 0 1 0
 0 2 0 0 1 0 1 0 0 0 1 1 1 0 0 1
 1 0 0 1 0 0 1 1 1 0 1 0 0 2 0 0
 1 0 1 0 0 0 0 2 0 1 1 0 1 1 0 0
 1 0 1 0 0 0 1 1 1 1 0 0 0 1 0 1
 1 0 0 1 1 1 0 0 0 1 0 1 0 0 2 0
 1 1 0 0 1 0 1 0 0 1 0 1 0 0 1 1
 1 1 0 0 0 1 1 0 0 0 0 2 1 0 1 0
integral_closure

1 16
 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
grading