You are given a code:

def main_solution(x):
    return func_20(func_20('dxrbq', x), func_15('axwm'))

Can you predict the output of `main_solution("fuxarfk")` 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": "fuxarfk"}, "ref_output": "d\u00abfax\u00bbu\u00abrxx\u00bbb\u00abawq\u00bbr\u00abfmk\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_20('dxrbq', x), func_15('axwm'))", "funcname": "main_solution"}
rule