Task: Program Execution
Input (English): 355, 2377, 6109, 2315, 9689, p, 7097, 9291, 397, 6989, 4261, 9015, f, t, 1685, 5579, l, d, 7877, w, 4713, 5337, 4119, 1863
Output (English): d, f, l, p, t, w