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