12
18
21
16
20
18
12
15
18
17
15
17
17
16
19
17
17
19
18
21
20
17
21
17
19
18
18
13
18
17
16
18
18
19
16
15
21
16
8
18
18
18
20
18
9
9
15
17
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
21
21
21
21
21
21
21
21
21
21
21
16
21
21
21
21
21
21
20
21
21
21
21
21
21
21