Abstract
The research proposed aims to determine the relationship between the language spoken by the group Panará and one that was spoken by Cayapó do Sul. The Cayapó do Sul occupied a large area in central Brazil (Southern state of Goias, northeast of the current Mato Grosso do Sul, northwest of the state of Sao Paulo and "Triangulo Mineiro", in Minas Gerais), and after about two centuries of con…