You are given a code:

def main_solution(x):
    return func_9('whq')

Can you predict the output of `main_solution("ovktjsovru")` 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": "ovktjsovru"}, "ref_output": "whqqhw", "ref_code": "def main_solution(x):\n    return func_9('whq')", "funcname": "main_solution"}
rule