You are given a code:

def main_solution(x):
    return func_5('whcj', 'fslv')

Can you predict the output of `main_solution("qvvymo")` 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": "qvvymo"}, "ref_output": "fslvwhcj", "ref_code": "def main_solution(x):\n    return func_5('whcj', 'fslv')", "funcname": "main_solution"}
rule