21
21
21
21
21
21
15
21
21
21
21
21
16
21
21
21
21
12
21
21
16
16
21
16
21
21
21
15
16
16
16
15
21
16
15
21
21
21
15
21
20
16
21
21
21
21
21
21
21
21
21
21
21
HD
21
21
21
21
21
20
15
16
21
21
21
21
15
21
21
16
16
21
9
12
19
20
16
20
12
16
14
17
13
13
20
16
20
21
21
17
19
18
9
21
13
20
19
12
16
19
16