You are given a code:

def main_solution(x):
    return func_20('aygq', 'njb')

Can you predict the output of `main_solution("kouvysmlqq")` 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": "kouvysmlqq"}, "ref_output": "anyjgbq", "ref_code": "def main_solution(x):\n    return func_20('aygq', 'njb')", "funcname": "main_solution"}
rule