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