10
12
20
13
13
21
8
15
8
21
8
13
13
16
20
15
8
11
18
14
16
8
18
14
9
12
17
21
19
9
12
12
21
9
9
12
21
13
17
21
8
21
21
15
21
21
21
21
17
21
17
21
21
21
15
21
21
21
15
21
15
16
21
16
21
21
16
21
16
13
21
21
21
20
18
20
21
18
21
21
21
21
21
21
21
21
21
21
21
15
21
21
21
21
21
21
21
21
12