1
Sources
2
1
1
6
2
4
2
0
6
1
4
2
1
0
1
1
1
1
2
1
2
2
2
1
3
4
1
1
4
2
3
6
1
2
4
4
3
2
1
1
3
2
6
2
1
4
1
3
0
