21
15
12
16
18
10
16
21
15
21
21
16
21
16
21
21
21
21
16
21
16
21
21
21
20
16
12
15
21
21
12
21
21
20
12
12
17
16
16
20
20
21
16
15
15
18
10
20
17
15
21
21
21
21
16
16
21
21
17
21
21
21
21
16
21
21
21
21
15
21
21
21
21
21
18
21
21
21
21
15
21
20
16
18
16
16
21
21
21
11
21
21
16
15
21
21
15
15
16
17