Task: Program Execution
Input (English): f, f, 6699, 6499, 9827, v, 6465, 2785, 3467, 27, R, r, i, j, 4967, v, 6231, u, Z, 8253, X, 1437, h
Output (English): f, f, v, R, r, i, j, v, u, Z, X, h