Task: Program Execution
Input (English): 7883, v, 8785, 2239, 1987, 21, 5245, T, c, 5157, 6097, a, 9331, 2605, 4547, 4737, 8787, 6829, 4683, u
Output (English): 1, 3, 4, 5, 6, 7, 10, 11, 13, 14, 15, 16, 17, 18, 19