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