Task: Program Execution
Input (English): O, 7389, O, f, y, 7079, p, 2991, 2593, 7725, c, J, L, f, X, w, u, 467, 7809, 6353, Q, 4601
Output (English): O, O, f, y, p, c, J, L, f, X, w, u, Q