You are given a code:

def main_solution(x):
    return func_20('qae', 'mbxf')

Can you predict the output of `main_solution("zobyjpjvi")` 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": "zobyjpjvi"}, "ref_output": "qmabexf", "ref_code": "def main_solution(x):\n    return func_20('qae', 'mbxf')", "funcname": "main_solution"}
rule