Task: Program Execution
Input (English): 5255, 5211, 5209, 8705, 4141, F, S, l, 8377, 2253, 2139, 6471, 8645, 9517, K, 1097, 9531, n, H, 4625, 4005, Z, b
Output (English): 1, 2, 3, 4, 5, 9, 10, 11, 12, 13, 14, 16, 17, 20, 21