Task: Program Execution
Input (English): d, 8723, 6961, 8191, 2205, 2251, U, 5031, 3689, 6405, 4283, 7503, f, C
Output (English): d, U, f, C, 8723, 6961, 8191, 2205, 2251, 5031, 3689, 6405, 4283, 7503