21
20
20
21
21
21
21
21
21
21
21
21
21
21
21
17
21
21
21
21
21
19
21
21
17
20
16
16
21
21
21
21
15
21
21
21
21
21
21
21
21
21
21
15
16
16
21
21
16
21
21
16
16
10
21
20
21
15
16
21
17
21
20
21
21
21
20
18
21
20
21
21
21
21
21
21
21
21
16
21
HD
17
21
21
20
21
16
21
21
21
21
20
21
19
21
21
21
21
20
21
21