Task: Program Execution
Input (English): c, 2997, W, i, 6639, 71, 3847, g, n, f, y, t, b, 8991, 2903, 7891, K, 783, 5775, 379, 3651
Output (English): 2997, 6639, 71, 3847, 8991, 2903, 7891, 783, 5775, 379, 3651