Task: Program Execution
Input (English): 1, 6, ['7727', 'c', '1413', 'p', 'r', '8187', '5057', 'S', '5259', 'Y', 't', 'f', '1801', '4513', '4347', '1033', '1717', 'Z', 'G', 'I', 'X']
Output (English): 7727, 5057, 1801, G