4 3
0 1
1 2
0 2
0 3

4 4
0 1
1 2
0 2
0 3

5 4
0 1
0 2
0 3
1 2
1 3
2 3
1 4
2 4

5 5
0 1
0 2
0 3
1 2
1 3
2 3
1 4
2 4

6 6
0 1
0 2
0 3
0 4
0 5
1 2
1 3
1 4
1 5
2 3
2 4
2 5
3 4
3 5
4 5

6 6
0 1
0 2
0 3
0 4
0 5
1 2
1 3
1 4
1 5
2 3
2 4
2 5
3 4
3 5

6 5
0 1
0 2
0 3
0 4
0 5
1 2
1 3
1 4
1 5
2 3
2 4
2 5
3 4
3 5

3 3
0 1
1 2

3 2
0 1
1 2

3 1
0 1

5 5
0 3
2 3
2 4
0 4
0 2
3 4
0 1
1 2
1 3

5 4
0 3
2 3
2 4
0 4
0 2
3 4
0 1
1 2
1 3

6 4
0 3
2 3
2 4
0 4
0 2
3 4
0 1
1 2
1 3
2 5
4 5

6 3
0 1
0 4
1 4
3 4
1 2
2 3
3 5

6 4
0 1
0 4
1 4
3 4
1 2
2 3
3 5