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