11
10
21
8
9
10
13
12
21
10
10
9
16
17
10
12
12
13
18
21
15
21
12
8
8
21
21
21
21
15
21
21
15
15
21
21
21
15
21
21
21
15
21
21
21
15
21
15
21
15
21
15
21
21
21
21
21
21
15
21
21
21
21
21
21
15
21
21
21
20
21
21
21
21
15
21
21
21
21
21
15
21
21
21
21
21
16
20
16
21
21
16
20
21
21
21
21
20
21
21