21
21
21
18
15
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
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
21
21
21
21
21
8
21
21
21
14
21
21
21
21
21
21
21
21
21
21
21
21
19
21
21
21
21
21
21
21
21
21
21
21
21
21
20
21
21
21
21
21
21
21
21
21
21
21
21
17
21
21
21
21
20
10
21
11
8
17
8
21
21
8
13
10
18
14
11
11
18
19
21
21
21
21
21
21
21
21
21
21
21
21
21
21
20
21
21
21
20
21
21
21
21
21
21
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
19
21
20
21
21
21
21
20
21
21
21
21
20
21
21
21
21
21
21
21
21