18
16
18
12
21
21
21
16
21
16
12
12
21
18
21
16
21
21
21
18
18
18
21
16
21
21
16
16
21
16
21
21
21
21
21
16
21
21
21
12
21
21
21
21
21
21
21
18
21
21
21
18
21
18
12
21
17
21
16
21
21
18
18
21
18
21
16
21
12
21
21
21
21
21
21
16
21
21
21
15
18
16
16
9
10
9
15
8
20
11
13
15
8
20
16
14
17
8
12
8