4
1
1
4
0
0
4
0
0
4
0
0
9
0
0
9
0
0
4
1
2
2
1
1
2
2
1
2
2
2
3
1
1
9
1
2
7
0
0
2
0
0
5
0
0
5
6
12
3
1
1
12
1
2
5
1
1
5
1
5