α. early Old English iermþ- (inflected form), early Old English iermð- (inflected form), early Old English ermð (Kentish), Old English ermð- (inflected form), early Old English ermþo (dative), Old English ermþu (accusative), Old English ermðu, Old English yrmþ, Old English yrmð, Old English–early Middle English yrmþe, Old English–early Middle English yrmðe, Old English yrmþo, Old English yrmðo, Old English yrmþu, Old English yrmðu, early Middle English ermden (probably transmission error), early Middle English ermðe.
β. Old English earmþ, Old English eormþ, late Old English earmð, late Old English eormð, early Middle English armþe, early Middle English ærmþe, early Middle English ærmðe, early Middle English earmde, early Middle English earmþe, early Middle English earmðe.
