Triangle XYZ is reflected across the x-axis to produce triangle X’Y’Z’. Then triangle X’Y’Z’ is rotated 90° counterclockwise about the origin to create triangle X’Y’Z’. If triangle X’Y’Z’ has vertices X’(4,0), Y’(2, -1), and Z’(2, 1), what are the coordinates of the vertices of triangle XYZ? Write your answers as integers.