lʔaxu wʔuxtuh ʕaawanu maʕ ʔabuuhum [ laakin ʔabuuhum maa ʕaawan maʕhum ].
the-brother.NOM and-sister-his.NOM -helped with father-their.GEN  but father-their.ACC  -helped with-them.GEN
The brother and his sister helped their father [ but their father did not help them ].