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"To progress through the level, you must roll the ball over switches on the floor to activate and deactivate colored doors that block your path. The colors of the doors correspond to the colors of the balls that you can collect. If you collect a ball of the same color as a door, the door will open and you can proceed through the level. If you collect a ball of a different color than the door, the door will remain closed and you will not be able to progress.
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