Task: Program Execution
Input (English): D, 9095, 8549, S, 1173, v, X, 2329, 283, 3453, Y, 6961, l, 3571, 7125, 3159, x, 8211, F, u, P
Output (English): 2, 3, 5, 8, 9, 10, 12, 14, 15, 16, 18