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