16 28
1 2 -0.953125
2 3 -0.328125
1 4 -0.9453125
3 4 -0.0859375
1 5 0.8359375
2 6 -0.1953125
5 6 -0.171875
3 7 -0.953125
6 7 0.9375
4 8 -0.03125
5 8 0.2109375
7 8 -0.3046875
5 9 -0.4453125
6 10 -0.5703125
9 10 -0.7578125
7 11 0.0078125
10 11 -0.1640625
8 12 0.171875
9 12 0.640625
11 12 -0.3515625
9 13 -0.984375
10 14 -0.15625
13 14 0.734375
11 15 -0.5859375
14 15 -0.3125
12 16 0.84375
13 16 -0.7109375
15 16 -0.1171875