2
1
3
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
4
2
1
2
3
2
2
1
1
1
3
2
1
2
2
4
2
1
1
2
1
1
1
2
2
2
1
1
1
2
1
1