Laboratorio-Computazionale/icosahedron

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