Yes, I do "".join(). Python is not always beautiful.
I began reusing part 1 for part 2, until I realised you cannot reuse the
Counter.most_common, and you need the actual values to be able to se
equal occourences.
I probably lost 5-15 minutes just to dribble with 3 levels of nested
objects. In GMT+1 before coffee, that cost me.
Part 2 was way uglier before some well motivated refactoring. Since all
tests and expected output were in place, refactoring was easy.
