and with the marking applied to the past tense as well. However, this resulted in a complication, the typologically unusual situation where the agent and object are treated the same, and different from the intransitive subject. Given its rarity, one might expect such a system to be unstable, and indeed it appears to be changing. Payne reports that younger speakers change the past-tense construction to one of the following, either using the absolutive (= nominative) inflection for the agent:

or secondarily marking the object as an object,