21
21
21
16
16
21
21
21
21
21
15
21
21
21
21
21
21
21
20
21
15
21
16
21
20
21
21
21
21
16
21
20
21
21
12
16
21
17
12
21
21
21
12
21
18
21
17
18
20
16
16
21
21
16
21
20
15
18
12
21
18
21
16
16
16
18
16
18
12
12
15
21
18
21
21
16
21
21
18
15
18
18
21
21
21
18
18
15
21
18
21
16
16
18
21
21
18
21
21
21