x  y  j1 j2 j3
1  4   1  0  0
2  9   1  0  0
3  8   1  0  0
2  4   0  1  0
1  4   0  1  0
4 10   0  1  0
3  6   0  1  0
2 10   0  0  1
3  9   0  0  1
4 14   0  0  1