Sentence:  Sui children rapidly learn to distinguish these clan-related dialects; young children may speak a mix of <WSD>matrilect</WSD> and patrilect, but older children and teenagers are almost fully patrilectal (Stanford, 2008b). 
Meaning of the word marked with <WSD> tags:  The idiolect of the mother or the mother's clan in a household where the mother and the father speak different idiolects.