Task: Program Execution
Input (English): 9749, 3995, z, l, 9995, X, q, z, 2219, V, 3857, E, 7733, P, Y, 3907, C, h, G, 6411, B, P
Output (English): 3, 4, 6, 7, 8, 10, 12, 14, 15, 17, 18, 19, 21, 22