# this is a comment line starting with '#'
# first all nodes must be in this graph with single uniq number
# node numbers must start with 1
# then edges with two numbers as from/to node
# example: '10 12' means edge from node 10 to 12
#
1
2
3
4
5
6
7
8
4 5
4 6
7 6
8 7
8 5
5 6
3 8
3 7
3 4
1 2
1 8
1 5
2 7
2 6
