lʔaxu₁ wʔuxtuh₂ ʕaawanu (maʕ baʕð̣hum 1baʕð̣ {  / }.
the-brother.NOM and-sister-his.NOM -helped with some-them.GEN the-some.GEN  together.ACC  in-the-turn.GEN
The brother and his sister helped each other { together / taking turns }.