Task: Program Execution
Input (English): 9333, 8885, x, B, 7289, r, l, Z, L, 6601, q, j, y, d, 6637, s, f, M, P, s, d
Output (English): 3, 4, 6, 7, 8, 9, 11, 12, 13, 14, 16, 17, 18, 19, 20, 21