Task: Program Execution
Input (English): 12, 20, ['T', '4487', 'm', 'M', '6289', '1759', 'l', '3483', '4459', 'O', '9895', 'u', '5417', 'r', 'B', '2873', '1189', '3837', 'x', '5437']
Output (English): 5437x383711892873Br5417u