Task: Program Execution
Input (English): Z, J, 5303, 69, 5839, o, Z, 1665, x, 8439, 3721, 5507, 9947, D, 4897, 8017
Output (English): Z, J, o, Z, x, D, 5303, 69, 5839, 1665, 8439, 3721, 5507, 9947, 4897, 8017