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