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