2
1
1
1
1
1
2
1
1
1
2
1
2
2
1
1
4
1
1
2
1
1
3
1
2
2
1
7
4
4
1
1
1
1
1
1
2
1
1
1
1
2
1
1
2
1
1
2
1
1