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