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