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