17
19
21
21
21
17
21
21
21
21
21
21
21
21
21
20
21
21
21
21
21
15
21
21
15
21
21
21
21
21
15
21
21
21
21
21
21
21
21
21
21
20
20
17
21
21
21
21
21
21
21
21
21
21
21
21
21
15
21
21
12
21
21
21
21
20
15
21
21
19
21
21
21
21
21
21
20
21
15
17
21
12
21
15
14
21
20
21
21
15
21
21
21
21
21
21
20
20
21
15
21
18
21
15
17
21
21
21
20
21
21
21
21
21
20
21
17
15
21
21
21
21
21
21
15
21
15
15
17
21
21
15
21
20
14
20
21
20
21
21
20
21
20
21
21
15
15
16
21
20
20
20
21
20
20
19
21
20
20
12
19
20
20
21
20
21
15
21
21
12
21
21
21
21
21
15
15
21
21
14
21
15
21
21
21
21
21
21
21
21
20
21
21
21
21
21
21
21
21