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