Previous solution:
ahs, are, ares, ash, ear, ears, era, eras, ers, hare, hares, has, hear, hears, her, hers, rah, rahs, rase, rash, res, rhea, rheas, sea, sear, sera, share, she, shea, shear
ahs, are, ares, ash, ear, ears, era, eras, ers, hare, hares, has, hear, hears, her, hers, rah, rahs, rase, rash, res, rhea, rheas, sea, sear, sera, share, she, shea, shear