You are given a code:

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

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