12
21
21
12
21
21
21
21
21
12
14
21
16
21
16
21
20
12
16
21
20
15
21
18
21
13
21
21
21
20
17
15
18
20
21
20
16
21
16
21
21
21
16
21
16
16
21
21
21
17
21
21
14
19
16
16
16
21
20
21
21
20
21
21
21
16
21
14
15
21
15
21
18
21
21
21
21
21
17
18
21
21
12
21
16
16
16
21
21
21
21
20
15
15
16
19
21
21
16
21