21
21
21
21
21
21
21
15
21
21
21
21
21
21
21
21
20
21
15
21
21
21
21
21
15
21
21
21
21
21
21
21
21
21
19
21
21
21
21
21
21
21
21
21
21
21
20
21
21
21
21
20
21
21
21
21
16
21
21
21
21
21
21
21
21
20
15
20
21
16
21
15
21
21
21
21
21
21
15
21
21
21
20
HD
21
12
21
20
21
21
21
21
16
21
21
21
21
21
15
21
21