21
21
21
20
21
20
21
21
21
21
21
21
21
21
21
21
21
21
21
21
12
21
21
21
21
12
21
21
21
21
21
14
18
21
21
21
21
21
20
21
21
15
21
21
21
21
21
21
21
21
21
21
21
21
21
21
12
14
21
21
21
21
20
21
21
21
21
21
21
20
21
21
21
21
21
12
13
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
12
21
21
15
21
21
20
12
20
21
21
21
21
19
20
20
18
21
20
17
21
21
21
21
20
21
20
21
21
21
20
20
20
20
21
21
21
17
11
18
20
20
21
21
21
21
21
20
21
21
21
20
20
21
20
20
21
21
21
21
21
21
21
21
21
12
21
21
21
21
20
21
21
20
21
21
21
20
21
21
12
21
21
20
19
21
13
21
21
21
21
21
21
21
21
12