Dragon Age: Origins - Awakening

How do I solve Experiment levers in Architect's lab? (Possible spoiler)

When you escape the cells in the Silverite Mines, you go into the lab and there are levers there to clear out the gas and open the magic door to get to whatever is on the floor. Has anyone done this?

sequence is facing the levers: LEFT RIGHT LEFT RIGHT

Ya its pretty easy. And really I never remembered how but if you just start by pulling the Left lever then go back and forth I end up solving it in a short amount of time :P

The idea is to have all of the fires go out. I can't relate the exact sequence, but I believe you pull the left lever until the 2 nearest fires are lit and them pull the right lever. That removes the gas and lowers the barrier. Nice rogue armor in chest.