Task: Program Execution
Input (English): 12, 20, ['4367', 'U', 'y', 'n', 'x', '4847', '2509', '2041', '4725', 'n', '63', 'g', '4881', 'p', 'u', 'i', 'l', 'f', '6829', 'f', '7435', 'l', '1845', '8923']
Output (English): f6829fliup4881g