12
16
21
21
21
21
21
12
21
12
16
13
16
16
19
21
21
21
21
16
20
21
21
21
21
21
21
21
21
15
21
21
17
12
21
21
21
15
21
21
16
21
HD
21
21
21
21
17
21
21
21
21
21
14
21
16
21
21
21
21
21
21
16
21
21
15
19
21
21
21
21
21
16
21
21
21
17
21
16
21
21
16
21
15
12
21
16
21
20
14
18
21
21
16
21
21
21
16
21
16
21