Task: Program Execution
Input (English): vUyGjQylNktwhilFDjCjKkzshiRtw, OAcYhrVziOvlNktwhilFDjCjJtcgqLZUyhe
Output (English): a, c, d, e, f, g, h, i, j, k, l, n, o, q, r, t, u, v, w, y, z