16
11
12
21
21
20
21
12
21
21
21
21
21
21
19
21
21
21
21
21
21
15
15
21
21
12
21
16
21
16
21
16
21
17
16
21
20
21
16
16
19
16
16
21
21
21
12
21
21
21
16
21
21
21
21
21
21
21
15
20
21
16
21
16
21
12
12
21
21
21
21
21
16
21
16
21
21
21
16
21
21
21
21
16
16
21
21
21
21
18
21
21
21
16
21
18
21
21
21