Grebo is a Kru language of Liberia. All of the Grebo languages commonly go by the term Grebo, though in Ivory Coast Krumen is usual. Grebo country is in the extreme south-west of Liberia on the coast and inland, between the rivers Cavally and Cess. As in other Kru languages, tone is extremely important. For instance, né with a high (or high-mid) tone is the first-person pronoun "I", while nè with a low tone is "you" singular.
(Courtesy of Grebo Language Wikipedia)