17
18
21
13
21
8
21
10
11
9
16
10
14
8
11
12
20
11
9
8
15
21
20
21
21
21
21
21
16
21
16
21
17
21
21
21
21
12
21
21
21
20
21
21
20
12
16
21
21
21
15
20
21
21
16
21
10
16
15
20
21
16
16
21
21
16
21
21
21
14
21
21
21
19
15
16
21
21
21
21
21
21
16
16
21
21
16
21
16
21
21
17
21
15
21
21
21
21
21
17