Two Syllables
caning, chaining, draining, feigning, gaining, haning, laning, painting, raining, reigning, reining, staining, straining, training, waning
Three Syllables
abstaining, attaining, campaigning, complaining, constraining, containing, detaining, disdaining, explaining, maintaining, obtaining, ordaining, pertaining, refraining, regaining, remaining, restraining, retaining, retraining, sustaining