Task: Program Execution
Input (English): 1, 10, ['Y', 'z', 'Z', 'i', '4647', 'Q', 'l', '3341', '3013', 's', '1909', 'j', '1049', '3045', 'T', '8745', '5505', '6105', '4239', '6047']
Output (English): s31031433lQ7464iZzY