Task: Program Execution
Input (English): 4131, x, D, 1789, 2361, 431, o, 7027, k, 8517, 7523, t, H, 2125, 3925, 6357, 4551, 1621, G, 2095, 8797
Output (English): 4131, 1789, 2361, 431, 7027, 8517, 7523, 2125, 3925, 6357, 4551, 1621, 2095, 8797