Task: Program Execution
Input (English): W, 6233, 5305, x, F, 8219, B, 5563, M, 8743, N, 6677, 3103, 6643, 7329, 8323, u, j, K, 4903, 5469, q
Output (English): W, x, F, B, M, N, u, j, K, q