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