Task: Program Execution
Input (English): 2, 11, ['3471', 'b', '6873', 'I', '5511', '2053', '1013', 'H', '2981', '439', '5859', 'X', 'g', '6027', '911', '4019', 'C', '9279', '695', '6435', 'J', '8885', 'h', 'u']
Output (English): b, g, u