they (2 people)

Ka haere rāua.
They (2 people) will go. 

Scenario:  Tama and Mere are going to go.  Whaea goes to tell Koro that they will go.  She says "E Koro, Ka haere rāua" which means "Koro, they (2) will go" Koro knows that Whaea is talking about Tama and Mere because she used the exclusive of listener and speaker pronoun for 2 people rāua.