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