DV X1 X2 X3
8 1 0 0
9 1 0 0
7 1 0 0
5 0 1 0
7 0 1 0
3 0 1 0
3 0 0 1
4 0 0 1
1 0 0 1
6 -1 -1 -1
4 -1 -1 -1
9 -1 -1 -1