Task: Program Execution
Input (English): 4, 8, ['U', '8187', '6643', 'G', 'E', '9627', 'q', '4333', '273', 'U', 'b', '861', 'l', 'Y', 's', 'w', 'J', 'g', '1173', '1703', '1759', '9317', '5947', 'v', 'j', '8271', 'D', 'C']
Output (English): G, 861, 1703, C