Task: Program Execution
Input (English): 4, 19, ['e', '7769', 'u', 'j', 'r', '3965', 'o', '8747', '5837', 'b', 'p', '1395', '9213', '1021', 'W', '2721', 'Q', 'B', 'u', 'e', '7039', 'g', 'L', 'S']
Output (English): jr3965o87475837bp139592131021W2721QBu