4
Sources
3
1
1
1
0
2
1
2
2
2
1
1
4
1
3
2
4
1
2
4
2
3
4
4
1
5
1
2
1
3
1
2
2
1
0
0
3
1
3
2
2
4
1
2
1
2
0
2
2
