Task: Program Execution
Input (English): OpkbvYtMMzlBGjTGByUbujbydvHxg, rNEdBmJjGklBGjTGByUbujPIQxoWWavgT
Output (English): a, b, d, e, g, i, j, k, l, m, n, o, p, q, r, t, u, v, w, x, y