It was me who wrote the homeworks about vowel harmony. When questions started pouring in here, I realized it must have been a little tricky. I will revise it after the current group is finished with them.
What you do is simple. First answer the four question that I asked above, in this thread. Then looking at your answers have a look again to the original questions.
Erdincs explanation was good ... he gave us what the questions would be:
´what vowels are back and flat at the same time?´
´what vowels are back and round?´
´what vowels are front and flat?´
´what vowels are font and round?´
If this was on the original question, then I think I could answer it following Erdincs explanation.
