Task: Program Execution
Input (English): 943, 5189, g, 1055, g, O, 4513, 1637, U, 5295, f, 6693, 8005, s, 1925, 1877, l, Z, d, N, 7693, 2245, S
Output (English): 3, 5, 6, 9, 11, 14, 17, 18, 19, 20, 23