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