Task: Program Execution
Input (English): 4903, 6945, r, E, 831, 8917, u, 7685, 6835, p, 3097, 5425, f
Output (English): 4903, 6945, 18, 5, 831, 8917, 21, 7685, 6835, 16, 3097, 5425, 6