4
8
12
15
2
1
3
2
1
0
1
0
4
3
2
3
3
2
2
1
1
1
3
2
1
0
1
0
2
4
2
2
1
0
2
1
1
0
5
8
5
8
4
5
3
2
2
1
2
1