2
1
1
1
1
15
20
1
3
1
4
5
1
1
3
1
1
1
1
1
1
2
3
1
1
1
1
1
1
1
3
1
1
1
1
1
2
1
1
1
1
1
5
1
1
1
1
4
1
2