3, 4, 5, 6

1, 2, 4

4, 6

1, 2, 4

2, 3, 4

3, 5, 7

2, 4, 5

1, 2, 4

6, 7

4, 5

1, 2, 4

2, 3, 4, 5, 6

4, 6

2, 3, 4, 6

2, 4

2

2, 4, 6

1, 2

1, 2

1, 2, 4

6