Patrilectal

In short, the tendencies to regional endogamy (including coastal area endogamy) and patrilectal exogamy exist in practice, if not in law.

Sui children rapidly learn to distinguish these clan-related dialects; young children may speak a mix of matrilect and patrilect, but older children and teenagers are almost fully patrilectal (Stanford, 2008b).

Children above five are ridiculed for any use of their mother's speech pattern, and by age five to seven, children use the patrilectal forms.

Sui children have a mix of matrilect and patrilect at very young ages, but they eventually become fully patrilectal by late adolescence.