21
20
21
20
21
21
21
21
16
16
20
21
15
20
21
21
20
21
21
21
21
21
20
16
16
16
20
21
20
16
16
16
21
16
19
21
18
21
16
15
21
21
20
20
19
16
15
20
19
21
15
14
15
21
21
20
21
16
20
21
21
21
21
21
21
20
20
21
21
20
21
20
21
21
16
20
18
20
20
18
20
16
15
21
20
20
21
21
21
21
21
21
21
21
21
20
21
21
16
21
16
21
21
21
21
16
21
21
20
21
19
21
20
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
20
21
21
21
21
21
20
21
21
16
16
16
21
19
21
16
21
21
16
21
21
21
21
21
21
21
21
20
16
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
16
16
20
21
21
21
20
21
21
13
21
21
21