Starting new matrix.
mna6 -- MNA matrix with 4 floating voltage sources in series.
9
1 1 2.0
5 5 2.0
6 1 1.0
1 6 1.0
6 2 -1.0
2 6 -1.0
7 2 1.0
2 7 1.0
7 3 -1.0
3 7 -1.0
8 3 1.0
3 8 1.0
8 4 -1.0
4 8 -1.0
9 4 1.0
4 9 1.0
9 5 -1.0
5 9 -1.0
0 0 0.0
0.0
0.0
0.0
0.0
0.0
1.0
1.0
1.0
1.0