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