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