2
3
2
1
3
2
1
0
4
2
1
0
6
2
1
0
7
2
1
0
8
2
1
0
10
2
1
0
11
2
1
0
14
2
1
0
15
2
1
0
16
2
1
0
17
2
1
0
18
2
1
0
20
2
1
0
22
2
1
0
24
2
1
0