21
21
21
21
21
21
21
21
15
21
21
21
21
16
21
21
18
16
16
21
21
21
21
21
21
20
21
21
21
21
21
21
16
21
17
21
21
16
21
21
21
21
21
21
21
21
21
21
21
21
15
19
16
12
15
17
15
21
11
18
13
19
19
13
8
12
15
8
18
19
11
13
17
18
21
16
9
15
20
14
17
21
10
8
13
12
15
10
18
17
21
15
20
16
21
10
8
19
8
15