Task: Program Execution
Input (English): BdMLdMlkRLBALKeHfRhoOXhJzjwtcP, uGWFHOBmhALKeHfRhoOXhwMfbtzNApoo
Output (English): a, b, e, f, g, h, k, l, m, n, o, p, r, t, u, w, x, z