21
21
21
16
21
21
21
21
21
21
21
21
21
18
21
21
21
17
16
21
21
20
16
21
21
16
21
21
21
20
21
21
21
21
16
15
18
21
20
16
21
21
17
16
21
21
21
21
16
16
21
18
17
21
21
16
17
21
15
16
20
16
17
16
21
18
21
15
21
21
21
21
21
21
20
19
21
21
21
20
21
16
15
21
21
21
21
18
21
21
21
20
21
21
10
19
17
16
21
18