Task: Program Execution
Input (English): 7, 15, ['o', 'P', 'A', '2069', '989', '6501', 'A', 'U', 'r', 'b', '7911', 'h', 'f', 'R', 's', '2059', 'c', '6849', '5791', '233', '8411', 'v']
Output (English): sRfh7911brUA