You are given a code:

def main_solution(x):
    return func_3('vtygol')

Can you predict the output of `main_solution("fjhhiaf")` 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": "fjhhiaf"}, "ref_output": "glotvy", "ref_code": "def main_solution(x):\n    return func_3('vtygol')", "funcname": "main_solution"}
rule