enumerate and output control

[sparkz_alot]

The code is posted in my post #1 that i openened this thread.

If that is your code, you would not have gotten "ABAB", in fact that code would not even run:

Error:
Traceback (most recent call last):
  File "C:/Python/Math/scratch.py", line 28, in <module>
    print(___, end='')
NameError: name '___' is not defined

I would suggest you first add some print()'s so you can see what's actually happening with i, k and j. You say you are also supposed to use a number. Where is that?