They include but are not fully limited to, Shilluk, Luwo, Thuri, Belanda Bor, Burun, Päri, Anuak, and Southern Luo. Although mostly being considered a Western Nilotic language and part of the Luo language group, the Burun languages are thought by linguist Roger Blench as a fourth subgroup of Nilotic.[4] The Dinka-Nuer Languages are the larger of the two subgroups and are spoken primarily in South Sudan.