You are given a code:

def main_solution(x):
    return func_20('zyyx', 'prxbfm')

Can you predict the output of `main_solution("wxmcqde")` 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": "wxmcqde"}, "ref_output": "zpyryxxbfm", "ref_code": "def main_solution(x):\n    return func_20('zyyx', 'prxbfm')", "funcname": "main_solution"}
rule