Task: Program Execution
Input (English): 6443, l, v, f, 7257, F, 5513, F, 7673, 6787, 1357, h, B, t, 7915, 4733, 9753, 231
Output (English): 6443, 7257, 5513, 7673, 6787, 1357, 7915, 4733, 9753, 231