Task: Program Execution
Input (English): 1, 5, ['5221', 'b', '4243', 'B', '6987', 'v', '403', 'm', '7201', '8659', '501', 'M', '6777', 'G', '1793', '1789', 'f', 'b', '2365']
Output (English): 7896B3424b1225