Task: Program Execution
Input (English): 4209, b, 3025, 373, 6323, 6235, 6839, 8571, j, H, 7109, S, 7713, Q, W, 977, 1411, W
Output (English): 1, 3, 4, 5, 6, 7, 8, 11, 13, 16, 17