21
12
12
21
14
16
18
15
16
16
21
16
21
17
13
17
16
16
15
16
21
21
14
21
17
21
15
21
21
18
18
21
20
21
21
21
17
21
21
21
21
21
15
18
17
21
21
21
21
20
16
21
21
21
21
21
15
21
16
21
21
18
21
21
21
12
13
21
21
15
17
16
12
16
20
18
17
15
16
18
21
21
21
20
21
21
21
18
21
21
21
21
13
21
15
21
21
21
20
21