In the southeastern corner of the country the Portuguese distinguished a set of Bantu-speaking people, described on a map prepared by José Redinha in 1973 as the Xindonga. The sole linguistic group listed in this category was the Cussu. The Language Map of Africa, prepared under the direction of David Dalby for the International African Institute, noted two sets of related languages in southeastern Angola. The first set included Liyuwa, Mashi, and North Mbukushu. These languages and other members of the set were also found in Zambia and Namibia. The members of the second set, Kwangali-Gcikuru and South Mbukushu, were also found in Namibia and Botswana. The hyphen between Kwangali and Gcikuru implies mutual intelligibility. Little is known of these groups; in any case, their members were very few.