Task: Program Execution
Input (English): w, f, 2847, A, j, 4567, M, w, p, n, O, 6899, 5441, u, 2623, f, 4883, 3735, 6341, p, F, 7669, 3617
Output (English): 1, 2, 4, 5, 7, 8, 9, 10, 11, 14, 16, 20, 21