2
Sources
1
1
1
2
2
1
0
1
2
3
4
4
4
3
2
4
3
1
5
0
0
1
1
1
1
1
1
2
2
1
1
2
1
3
1
2
2
2
13K
1
0
1
2
1
2
2
2
2
0
