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