Algo : 
1 -> B
2 -> B
3 -> B
4 -> AB
5 -> C
6 -> C
7 -> A
8 -> B
9 -> C
10 -> A

Maths :
11 -> A
12 -> E
13 -> B
14 -> C
15 -> A
16 -> BC
17 -> B
18 -> E
19 -> ABCD
20 -> AC

Anglais :
21 -> B
22 -> E
23 -> B
24 -> E
25 -> D
26 -> B
27 -> B
28 -> C
29 -> D
30 -> C

OC :
31 -> D
32 -> A
33 -> B
34 -> B
35 -> A
36 -> A
37 -> A
38 -> D
39 -> A
40 -> B

Physique :
41 -> A
42 -> B
43 -> B
44 -> C
45 -> A
46 -> A
47 -> C
48 -> B
49 -> C
50 -> A

Electronique :
1 -> D
2 -> A
3 -> C
4 -> C
5 -> D
6 -> D
7 -> C
8 -> B
9 -> A
10 -> AB

Architecture :
11 -> B
12 -> B
13 -> ABC
14 -> B
15 -> A
16 -> B
17 -> AB
18 -> D
19 -> AC
20 -> B