Task: Program Execution
Input (English): 4567, b, 5411, p, 3059, 1337, 8729, 2083, 9459, a, O, k, 5247, k, A, b, 1539, 8273, 1389, 7107, r, 5879
Output (English): 4567, 5411, 3059, 1337, 8729, 2083, 9459, 5247, 1539, 8273, 1389, 7107, 5879