21
16
20
20
15
21
21
18
21
21
21
21
19
21
21
21
15
21
21
18
19
21
21
21
21
20
16
16
16
16
16
21
16
21
16
18
21
21
15
21
18
21
19
21
21
21
21
21
21
21
19
21
21
21
21
18
21
21
21
16
21
21
21
15
21
21
21
16
21
21
15
21
18
21
21
21
21
21
21
21
16
21
21
21
21
21
21
21
21
21
21
16
21
21
21
21
21
18
16
15