Task: Program Execution
Input (English): 1743, 5393, k, 5487, k, 2879, 1085, z, 6521, 547, 2477, q, p, 2609, 6721, 4911, 6811, 3747
Output (English): k, k, z, q, p, 1743, 5393, 5487, 2879, 1085, 6521, 547, 2477, 2609, 6721, 4911, 6811, 3747