17
20
21
21
16
21
16
18
16
16
16
16
21
20
21
21
21
15
15
21
21
21
21
16
15
16
21
21
21
21
21
21
16
21
16
16
21
21
21
17
17
21
21
21
21
21
21
20
21
21
18
21
15
12
21
20
21
20
20
21
15
21
16
12
21
21
21
12
17
16
16
21
21
21
21
21
16
21
21
15
21
18
16
10
9
21
21
15
21
17
21
16
16
21
21
18
21
21
21
21