Task: Program Execution
Input (English): 1, 12, ['2957', '2351', '8155', '6771', 'U', 'a', 'r', 'y', '635', 'S', '2103', '223', '2515']
Output (English): 2957, 2351, 8155, 6771, U, a, r, y, 635, S, 2103, 223