21
20
21
16
15
17
21
16
21
16
15
21
21
21
15
21
15
20
21
16
14
21
15
21
21
21
21
21
21
15
21
21
21
15
15
21
21
21
21
21
21
21
21
20
21
18
20
21
20
20
20
21
21
18
15
14
12
12
15
21
17
21
21
21
21
17
21
20
21
16
21
21
21
21
21
19
20
21
21
21
15
16
20
21
21
21
21
21
21
21
21
21
21
15
21
21
15
21
14
21