12
15
21
16
15
21
21
21
17
16
21
21
21
15
16
21
21
16
21
21
12
21
15
21
16
21
15
21
20
21
21
16
21
19
20
21
21
21
12
21
20
21
21
15
20
21
15
21
21
15
21
21
21
15
21
21
21
16
21
16
16
16
21
16
15
14
20
21
11
21
21
15
16
19
16
15
15
16
21
21
21
21
21
HD
17
21
21
21
21
15
21
21
21
21
17
21
16
21
20
15
16