Task: Program Execution
Input (English): lHNDdEmmyEQjrfWYWfghLnzhTYIHYVb, SQGcBHQjrfWYWfghLnbIVwkCdZ
Output (English): b, d, e, f, g, h, i, j, l, m, n, q, r, t, v, w, y, z