Help with this Acids and Bases Lab?

Six beakers contain 0.2 M, 0.4 M, 0.8 M of HCl and NaOH (one concentration and one chemical per beaker). Phenolphthalein has been added to the ACIDIC SOLUTIONS. How can you determine which beaker contains which chemical and concentration? Equipments allowed are a dropper and spot well. A graduated cylinder, or any other measuring device, cannot be used.