The political units above are likewise grouped (into traditionally seven) but as of today, eight larger groups called "abusua": Aduana, Agona, Asakyiri, Asenie, Asona, Bretuo, Ekuona, and Oyoko. The members of each such "abusua" are united by their belief that they are all descended from the same ancient ancestress – so marriage between members of the same group (or "abusua") is forbidden, a taboo on marriage. One inherits or is a lifelong member of, the lineage, the political unit and the "abusua" of one's mother, regardless of one's gender or marriage. Members and their spouses thus belong to different "abusuas", with mother and children living and working in one household, and their husband/father living and working in a different household.