no.	key
1	D
2	D
3	A
4	B
5	A
6	B
7	B
8	A
9	D
10	A
11	A
12	C
13	B
14	D
15	A
16	C
17	A
18	C
19	B
20	B
21	C
22	B
23	A
24	A
25	A
26	D
27	B
28	D
29	B
30	C
31	A
32	B
33	A
34	A
35	D
36	B
37	A
38	B
39	A
40	C
41	C
42	D
43	E
44	E
45	C
46	D
47	A
48	C
49	D
50	C
51	A
52	D
53	D
54	B
55	A