Task: Program Execution
Input (English): f, 6871, 3527, 4815, 8613, E, 9231, H, M, b, 9443, 5949, E, H, O, 8083, 7307, 7889
Output (English): f, E, H, M, b, E, H, O, 6871, 3527, 4815, 8613, 9231, 9443, 5949, 8083, 7307, 7889