Task: Program Execution
Input (English): d, 1711, 7411, 955, 7963, x, 6639, D, 275, x, 3617, D, 8907, L, 9037, 3345
Output (English): d, x, D, x, D, L, 1711, 7411, 955, 7963, 6639, 275, 3617, 8907, 9037, 3345