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