Task: Program Execution
Input (English): FHfXyuNZdRGlgZZnvMIlNlfpigLwRnK, uuvSdsVhkGlgZZnvMIlNJsvCUnXcD
Output (English): d, f, g, h, i, k, l, m, n, p, r, u, v, w, x, y, z