Task: Program Execution
Input (English): 3271, 8145, 8279, C, 2683, 9395, 4533, 2511, 5777, P, 5265, x, n, 3229, f, Q, Z, i, 609, 7219, 2915
Output (English): 1, 2, 3, 5, 6, 7, 8, 9, 11, 14, 19, 20, 21