Task: Program Execution
Input (English): 2853, 9803, i, h, 401, T, 5219, o, n, u, v, l, 209, H, b, 6543, 8705, F, X, B, Y, Z, 7973, 3569
Output (English): 3, 4, 6, 8, 9, 10, 11, 12, 14, 15, 18, 19, 20, 21, 22