2
8
2
9
1
9
7
8
2
3
2
1
3
4
2
4
8
6
7
8
5
8
7
5
6
3
1
2
1
1
1
1
1
1
1
1
1
2
2
1
1
1
6
1
1
1
5
5
2
2
6
6
7
6
6
6
5
9
3
10
10
8
Frogs in a Pond