Task: Program Execution
Input (English): e, 6673, 5343, J, 6561, k, 9547, f, e, g, o, K, H, y, G, H, 475, 7161, 1373, e
Output (English): 1, 4, 6, 8, 9, 10, 11, 12, 13, 14, 15, 16, 20