Turn exercices 033 to 042 into practice

[cuihtlauac]

This task consists of doing 9 exercises instead of one, as described in issues #2167, #2168, #2170, #2172, #2173, #2176, #2177, #2178, #2179 and #2180. Create 10 folders (from 033 to 042), and populate them as the others. Makes sure dune build --root . and dune test --root . answer work.

• [X] 033 #2220
• [X] 034 #2221
• [X] 035 #2222
• [X] 036 #2223
• [X] 037 #2245
• [X] 038 #2248
• [X] 039 #2281
• [X] 040 #2283
• [ ] 041

[MissJae]

Can I do this? @cuihtlauac

[maha-sachin]

@cuihtlauac, can you help me to assign this issue?

[cuihtlauac]

@MissJae

Can I do this? @cuihtlauac

Complete #2192 first

[jahielkomu]

@cuihtlauac perhaps I can work on some of the issues here that haven't been worked on yet here?