Task: Program Execution
Input (English): x, i, I, Q, 8489, 827, I, 9373, 1061, q, L, 5809, 5011, 427, J, 3655, W, 6603, 5447, 6437, M
Output (English): 8489, 827, 9373, 1061, 5809, 5011, 427, 3655, 6603, 5447, 6437