0 0 4 0 0 0 0 0 0
0 0 0 0 0 0 2 0 0
0 5 0 0 0 0 0 0 3
0 0 0 15 0 0 0 0 0
0 0 0 0 5 0 0 0 0
0 0 0 0 0 15 0 0 0
4 0 0 0 0 0 0 8 0
0 0 5 0 0 0 0 0 0
0 0 0 0 0 0 2 0 0
