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