You are given a code:

def main_solution(x):
    return func_9(func_17('ogfm'))

Can you predict the output of `main_solution("imzni")` 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": "imzni"}, "ref_output": "mfgoogfm", "ref_code": "def main_solution(x):\n    return func_9(func_17('ogfm'))", "funcname": "main_solution"}
rule