Task: Program Execution
Input (English): k, L, 7509, 4125, 3427, g, w, u, 8199, q, 4241, f, 5099, 8505, 9607, 3873, G, 6231, 4177
Output (English): 7509, 4125, 3427, 8199, 4241, 5099, 8505, 9607, 3873, 6231, 4177