1 - d
2 - a
3 - b
4 - a
5 - d
6 - b
7 -b
8 - a
9 - a
10 - b
11 - a
12 - c
13 - d
14 - a
15 - b
16 - b
17 - c
18 - c
19 - d
20 - b
21 - b
22 - c
23 - d
24 - d
25 - c
26 - b
27 -b
28 - d
29- d
30- b
31- b
32- c
33- b
34- d
35- c
36- b
37- c
38- b
39- c
40- a
41- c
42- c
43- c
44- a
45- a
46- d
47- a
48- c
49- d
50- d