21
21
16
16
21
16
21
21
10
16
21
21
16
16
21
20
21
21
20
21
21
21
21
21
16
21
21
21
11
21
21
21
19
21
21
21
16
20
21
16
21
21
21
21
21
21
15
15
21
21
18
20
21
21
21
21
21
21
17
16
21
15
18
20
18
17
20
17
19
21
21
15
20
21
16
17
21
21
20
21
15
21
19
21
15
21
21
21
21
21
15
21
15
14
21
20
21
15
20
12