3 3 7 1
1 1 1.1
2 1 2.1
3 1 1e-30
2 2 2.2
3 2 3.2
2 3 2.3
3 3 3.3
1
2
3
   -1.09999999999998876454e-01
   -1.09999999999998876454e-01