1\"1".1
1
2
3·
4
5
6:
7:
8:
9
10
11:
12̈
13
14
15
16
17
18
19
20
1\"1".2
1
2
3
4
5
6
7
8
9
10
11
12̈
13
14
15
16
17
18
19
20
2\"2".1
1
2
3····
4
5
6
7
8:
9
10
11
12
13
14·
15
16
17
18
19
20
21·
2\"2".2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Retrieval time: 8 sec.