21
14
8
11
15
9
10
21
21
21
21
21
21
21
18
17
21
17
12
14
13
19
21
16
20
21
8
9
21
19
13
12
21
18
12
18
13
12
9
13
10
16
18
17
21
16
21
21
19
21
21
17
20
21
20
20
21
21
21
21
21
21
12
21
16
21
20
15
21
21
21
17
21
15
12
12
21
16
20
21
21
21
21
15
15
21
21
12
21
17
17
12
21
21
16
21
20
21
21
21