You are given a code:

def main_solution(x):
    return func_5('ziji', 'qopj')

Can you predict the output of `main_solution("fsgjngks")` 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": "fsgjngks"}, "ref_output": "qopjziji", "ref_code": "def main_solution(x):\n    return func_5('ziji', 'qopj')", "funcname": "main_solution"}
rule