Task: Program Execution
Input (English): HCtnJrLcIxbvnDloCRdKdVCVZefOONh, CRaELoFftAhIxbvnDloCRdKfWzAeO
Output (English): b, c, d, e, f, h, i, j, k, l, n, o, r, t, v, x, z