Task: Program Execution
Input (English): 1, 18, ['A', 'B', '509', 'U', 'j', 'v', '7867', 'v', 'j', '385', 'U', '2247', 'Y', '1595', '5575', '8003', '8921', '5297', '591']
Output (English): A, B, 509, U, j, v, 7867, v, j, 385, U, 2247, Y, 1595, 5575, 8003, 8921, 5297