21
16
21
21
16
21
21
21
21
21
20
16
21
16
21
21
21
21
20
21
21
16
21
21
16
16
21
21
21
21
21
21
16
21
21
20
21
21
20
21
20
21
21
21
21
21
21
21
21
20
21
21
20
21
21
21
21
21
21
21
16
21
21
21
16
21
21
21
21
20
20
16
21
16
21
21
21
20
HD
21
21
21
21
21
21
21
21
21
21
21
20
21
21
21
21
21
21
21
15
21
21