Task: Program Execution
Input (English): 1, 2, ['U', '7253', '5711', '7311', 'j', 'f', 'h', '2511', '7189', '1755', '8953', '1977', '455', '7053', '9309', 'v', '9127', 'U']
Output (English): U, 5711, j, h, 7189, 8953, 455, 9309, 9127