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