15
21
16
20
21
21
16
21
21
16
20
21
21
21
21
15
16
21
21
21
21
21
21
21
21
21
21
21
21
21
18
15
16
21
20
10
12
16
21
19
21
21
21
21
21
21
21
15
21
21
20
21
16
21
21
14
16
15
21
18
12
20
16
21
12
21
21
21
17
21
16
21
15
21
16
21
17
21
21
15
21
16
17
21
21
21
16
21
21
21
16
16
12
20
HD
21
16
20
21
18
21