4
2
1
1
5
2
1
1
6
2
1
1
7
2
1
1
16
3
2
2
17
2
1
1
19
-1
-2
-2
20
1
0
0
21
2
1
1
22
2
1
1
23
2
1
1
24
2
1
1
