4
1
2
0
1
0
2
0
6
0
8
0
1
0
4
0
3
6
4
0
4
0
1
1
2
1
6
0
6
0
8
3
8
3
9
0
6
0
12
0
16
0
1
0
3
0
0
0
2
0
2
0
6
0
2
0
2
0
1
0
1
0
5
0
6
1
