You are given a code:

def main_solution(x):
    return func_20(func_20('xjzw', x), func_15('piw'))

Can you predict the output of `main_solution("gujqup")` 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": "gujqup"}, "ref_output": "x\u00abgpj\u00bbu\u00abzij\u00bbw\u00abqwu\u00bbp", "ref_code": "def main_solution(x):\n    return func_20(func_20('xjzw', x), func_15('piw'))", "funcname": "main_solution"}
rule