21
13
21
21
20
21
21
14
21
21
21
21
21
21
21
21
21
21
21
21
21
20
15
12
20
21
21
21
21
21
21
21
21
21
21
18
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
20
21
21
21
21
21
21
21
21
17
21
21
21
21
21
19
21
21
21
21
21
21
21
21
21
21
21
21
18
21
21
21
21
21
21
21
21
21
21
10
21