Task: Program Execution
Input (English): 12, 16, ['u', '4435', 's', '4829', '3045', '2345', '6243', 'Q', '9305', 'q', '4921', '2121', 'F', 'B', '4243', '7611', 'G', 'X', '4441']
Output (English): 2121, F, B, 4243, 7611