The most suitable couple is one made up by crossed cousins. Marriage between parallel cousins is forbidden. If the woman still lives in the home of the father, the gifts must include him. If the woman accepts, she settles down in the man's encampment; if they have a child then they are considered a formal pair, which establishes mutual relations of kinship, expressed in rights and duties of reciprocity. A man can marry several wives, although a single wife is most common, and examples of three or more are rare. This polygyny coexists with a temporal polyandry during the pregnancy in order to improve the qualities of the baby. Each domestic group is part of a territorial group and other groups that are established to perform specific duties like security measures, according to the different stations and situations. On the other hand, each Núkâk is considered as part of a paternal lineage, "nüwayi", named after an animal or plant.
