21
21
15
21
21
21
21
21
21
21
21
21
21
21
21
21
21
16
21
21
16
21
21
21
21
21
16
21
21
21
21
15
21
21
21
21
16
21
21
21
21
21
21
21
21
15
21
18
21
21
21
21
16
17
16
HD
21
21
21
21
21
21
21
20
21
21
18
15
16
21
21
16
20
21
14
16
21
21
19
16
15
20
21
21
21
21
21
21
21
13
16
21
21
20
21
21
21
17
21
21
21