In these villages, on the contrary, again with one major exception, father's sister's daughter, different kinds of uncles and aunts are not theoretically sharply distinct. A man may through the practice of marriage, be mother's brother and classificatory father's brother to the same child. Some informants even denied, incorrectly, that the roles of mother's brother and father's brother differ at all. The lack of specificity in kinship roles goes with an absence of formal or organised sanctions. Those who feel that they have been let down have no sanctions to apply except to withdraw from social relations with the offenders - unless the matter is serious enough to call for violence.
Reciprocity is the main sanction.