15
21
21
21
21
16
21
21
21
16
21
21
16
21
16
21
13
21
21
21
16
16
21
15
21
15
21
21
21
16
21
21
16
16
21
18
19
21
21
21
21
20
21
21
21
21
21
21
21
21
21
21
17
16
16
15
16
20
21
21
21
21
21
21
21
16
16
21
18
21
21
15
16
21
21
21
21
21
21
21
21
21
20
21
21
21
18
12
15
20
16
10
12
13
20
11
11
9
15
12