Task: Program Execution
Input (English): f, p, 1697, x, h, 5513, u, 8589, e, 1441, Z, 4155, e, c, 7871, 1865, L, H, T, O, 1525
Output (English): 1697, 5513, 8589, 1441, 4155, 7871, 1865, 1525