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