Task: Program Execution
Input (English): E, L, 2499, 2473, 6877, 7995, w, I, 2645, 3523, F, 469, 3997, W, 6637, 3449, v, v, 6407, 8295
Output (English): E, L, w, I, F, W, v, v, 2499, 2473, 6877, 7995, 2645, 3523, 469, 3997, 6637, 3449, 6407, 8295