21
21
20
20
21
21
16
15
16
21
21
21
16
21
21
21
21
21
16
21
21
21
16
21
21
21
21
21
21
16
21
21
21
21
21
21
21
21
16
20
21
21
15
21
16
17
16
16
18
21
21
16
16
12
21
21
16
15
15
18
17
21
21
15
18
21
21
21
21
21
20
20
16
16
20
21
15
15
20
21
21
21
15
15
19
9
21
16
21
9
21
21
21
16
21
21
16
16
20
21