0 5

-1

9 7
 0 0 0 1 1 0 -4
 1 0 1 0 0 0 -1
 1 0 1 0 0 1 0
 1 2 -6 0 -1 0 0
 1 -3 5 0 1 0 0
 1 3 -5 0 -1 1 2
 1 -2 11 0 1 4 3
 1 -3 4 0 1 0 5
 1 0 0 0 0 0 1

Urs_parms
Urs_unknowns