You are given a code:

def main_solution(x):
    return func_20('fryzka', 'xhgkq')

Can you predict the output of `main_solution("ksqbuaitvk")` 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": "ksqbuaitvk"}, "ref_output": "fxrhygzkkqa", "ref_code": "def main_solution(x):\n    return func_20('fryzka', 'xhgkq')", "funcname": "main_solution"}
rule