You are an expert mathematician. Suppose we have several variables: a = 52, c = 11, b = 2, h = 9, q = 34, e = 11, j=53, t = 2, r = 91, y = 3, z = 6, w = 51. Which of the variables has an odd value? Think about it step-by-step and then tell me which variables at the end.