16
21
21
21
21
21
21
21
21
21
21
21
21
16
21
21
21
21
21
21
21
21
21
21
21
21
21
16
21
21
21
21
19
20
21
21
21
21
16
20
17
21
21
16
21
21
20
19
21
13
21
18
20
18
21
21
21
16
15
20
21
21
21
19
18
21
21
21
21
19
21
21
20
21
20
21
21
21
21
21
21
21
21
21
16
21
20
16
17
17
15
12
15
16
16
12
18
16
15
18