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