16
21
21
21
16
20
20
21
16
20
20
21
21
16
21
21
15
16
16
21
20
20
21
21
16
15
14
16
20
21
15
19
15
16
16
20
16
16
21
20
20
19
21
16
21
21
16
21
21
21
21
21
15
21
21
20
20
16
16
16
16
21
21
21
21
21
21
21
21
21
21
20
20
21
21
21
21
21
21
20
21
21
20
21
21
21
16
21
16
21
21
16
21
21
21
20
21
13
21
21
21
16
21
21
21
21
21
21
16
21
21
21
21
20
16
21
20
21
21
21
13
20
21
21
21
21
21
21
21
16
21
16
21
16
21
21
21
21
16
21
21
16
21
21
21
16
21
20
16
21
16
20
21
21
16
16
16
20
21
16
21
16
21
16
16
16
21
16
21
21
21
16
21
21
16
21
21
16
16
21
21
16
21
21
21
21
17
19
21
20
21
21
21
21
21
21
21
20
21