Task: Program Execution
Input (English): b, 9987, g, t, 9191, 8299, 2355, u, 8203, o, l, 9247, 5283, 3111, 3929, k, 3899, f, 9407, t, 2159, r
Output (English): b, f, g, k, l, o, r, t, u