7
2
1
1
8
2
1
1
9
2
1
1
10
2
1
1
11
2
1
1
12
2
1
1
13
2
1
1
16
2
1
1
18
2
1
1
19
2
1
1
20
2
1
1
23
2
1
1
24
2
1
1
