You are given a code:

def main_solution(x):
    return func_20(func_15('wsrooz'), func_9('gtffnd'))

Can you predict the output of `main_solution("xkux")` 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": "xkux"}, "ref_output": "\u00abgwt\u00bbf\u00abfsn\u00bbd\u00abdrn\u00bbf\u00abfot\u00bbg\u00abo\u00bb\u00abz\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15('wsrooz'), func_9('gtffnd'))", "funcname": "main_solution"}
rule