Task: Program Execution
Input (English): 10, 14, ['y', '5019', '521', 'U', '2159', 'X', 'b', 'e', '6997', 'U', '3583', 'I', '7073', '7', 'l', '243', 'c', '49', 'x', '7875', 'n', 'G', '6053', '2779', '3593', '1971']
Output (English): 7, 7073, I, 3583, U