Task: Program Execution
Input (English): I, 7183, 447, 7291, 685, 9895, f, j, 8409, v, 6085, e, 8395, U, B, R, y, e, 9011, 985, 6025, X, 2183
Output (English): 2, 3, 4, 5, 6, 9, 11, 13, 19, 20, 21, 23