Task: Program Execution
Input (English): 1439, 9177, 6479, n, 1693, f, 7795, 4791, 6025, q, 3517, l, c, k, 855, 769, r, u, k, g, 7285, 2279, n
Output (English): c, f, g, k, l, n, q, r, u