17
21
21
21
16
21
16
17
17
14
21
16
21
10
21
21
12
21
21
21
21
20
21
21
21
21
21
18
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
10
10
21
21
16
16
21
16
21
21
16
12
21
21
21
21
21
16
21
12
21
21
16
21
21
10
21
21
21
21
21
21
21
21
21
21
16
21
16
21
16
21
21
21
21
21
21
21