You are given a code:

def main_solution(x):
    return func_20((x + 'ady'), func_17('vfy'))

Can you predict the output of `main_solution("sghnaugdt")` 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": "sghnaugdt"}, "ref_output": "sygfhvnaugdtady", "ref_code": "def main_solution(x):\n    return func_20((x + 'ady'), func_17('vfy'))", "funcname": "main_solution"}
rule