You are given a code:

def main_solution(x):
    return func_20(func_15('wnjxo'), func_20('aduup', 'hlptvd'))

Can you predict the output of `main_solution("vxadpaxr")` without writing any code? Please reason and put your final answer in the following json format: {"output": <your output>}, where <your output> should be the final string.
user
{"ref_input": {"x": "vxadpaxr"}, "ref_output": "\u00abawh\u00bbd\u00ablnu\u00bbp\u00abujt\u00bbp\u00abvxd\u00bb\u00abo\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15('wnjxo'), func_20('aduup', 'hlptvd'))", "funcname": "main_solution"}
rule