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