Hi, I'd like to be language partners on italki.
I am an exceptionally fun person, but serious language coach.
You have an interesting question, but I am not sure I fully understand.
Are you looking to find out which are the most difficult subjects, in order to avoid them, or to understand them?
Perhaps we can have a trial lesson together.
See my profile and let me know if you think we have a match .
kind Regards
Colette