21
21
21
15
21
21
21
21
17
16
21
21
15
21
21
21
21
21
21
21
21
18
21
21
21
21
21
20
21
16
15
21
21
21
21
21
21
21
21
21
21
21
21
20
16
21
21
21
21
21
11
16
21
21
12
21
21
12
21
20
21
21
17
21
21
21
21
16
21
16
21
16
19
20
21
21
21
20
21
20
18
18
21
21
16
21
21
20
18
19
16
21
17
15
14
16
21
21
16
15