You are given a code:

def main_solution(x):
    return func_20(func_15(x), func_1('gjzpka', 4))

Can you predict the output of `main_solution("broija")` 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": "broija"}, "ref_output": "\u00abgbj\u00bbz\u00abprk\u00bba\u00abgoj\u00bbz\u00abpik\u00bba\u00abgjj\u00bbz\u00abpak\u00bbagjzpka", "ref_code": "def main_solution(x):\n    return func_20(func_15(x), func_1('gjzpka', 4))", "funcname": "main_solution"}
rule