Task: Program Execution
Input (English): 9279, 1523, x, 2511, y, 3017, 2903, 8665, 1041, o, 9379, s, 2073, q, 5469, 3317, 2089, i, 9019, 5585, e, 1393, e, 6781
Output (English): e, i, o, q, s, x, y