2
1
2
3
2
1
1
3
2
1
1
3
1
2
1
2
2
2
1
2
2
1
1
2
1
1
3
2
2
3
1
1
2
2
1
1
2
2
1
1
2
2
1
1
2
2
2
2
2
1
7
1
2
3
2
2
2
2
2
2
2
1
1
2
2
1
2
2
2
15
1
4
3
5
1
1
2
2
1
3
2
4
2
3
5
2
3
1
Frozen Lake