Inputs: 16
Comment: Green's contruction

0 1
2 3
4 5
6 7
8 9
10 11
12 13
14 15

0 2
1 3
4 6
5 7
8 10
9 11
12 14
13 15

0 4
1 5
2 6
3 7
8 12
9 13
10 14
11 15

0 8
1 9
2 10
3 11
4 12
5 13
6 14
7 15

1 2
3 12
4 8
5 10
6 9
7 11
13 14

1 4
2 8
7 13
11 14

2 4
3 8
5 6
7 12
9 10
11 13

3 5
6 8
7 9
10 12

3 4
5 6
7 8
9 10
11 12

6 7
8 9