Task: Program Execution
Input (English): Y, 2767, 5551, 4995, 1047, 9821, D, L, k, 7101, 8525, H, 9959, 3657, t, f, 2333, D
Output (English): Y, D, L, k, H, t, f, D, 2767, 5551, 4995, 1047, 9821, 7101, 8525, 9959, 3657, 2333