I need a logic puzzle that is similar to the puzzle in Jungle Temples. It is to be used in an Easter Egg.

Requirements:
- Must be solved with the Konami Code (Up Up Down Down Left Right Left Right B A)
- Must be as compact as possible, if not then try to have it as long and narrow as possible

Here's an image of the puzzle's front, to be seen by the player. It features levers as the individual buttons, so I recommend sticky pistons.
http://i40.tinypic.com/33mlrms.jpg
Thanks in advance.
EDIT: The A and B buttons have been moved one block to the left.