Other dialects spoken are Khengkha and Bumthapkha by the Khengpas and Bumthap people of Central Bhutan. Mangdepkah, which is spoken by the inhabitants of Trongsa and the Cho Cha Nga Chang Kha which is spoken by the Kurtoeps. The Sherpas, Lepchas and the Tamangs in southern Bhutan also have their own dialects. Unfortunately two dialects that are on the verge of becoming extinct are the Monkha and the Gongduepkha.