Task: Program Execution
Input (English): 14, 21, ['a', 'H', '3955', '2407', 'r', '4325', 'Y', '1693', 'U', 't', '6765', '2277', 'm', 'D', '4323', '8633', 'D', 't', '7911', '4739', 'T']
Output (English): T, 4739, 7911, t, D, 8633, 4323, D