Task: Program Execution
Input (English): 5129, 4619, x, H, 6851, 6415, e, c, 4193, r, 8391, 5881, 7377, P, r, w, U
Output (English): x, H, e, c, r, P, r, w, U, 5129, 4619, 6851, 6415, 4193, 8391, 5881, 7377