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