Task: Program Execution
Input (English): 8021, 9333, 8989, 7053, f, 9665, J, F, O, 3681, J, 8651, f, 5555, 9171, B, 9303, 7539, 1005, w, 3617, i, 587
Output (English): f, J, F, O, J, f, B, w, i