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

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

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

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

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

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

Architecture :
11 -> AB
12 -> D
13 -> A
14 -> C
15 -> A
16 -> ABD
17 -> C
18 -> C
19 -> A
20 -> C