You are given a code:

def main_solution(x):
    return func_5(func_23('nnjngo', 1), 'epe')

Can you predict the output of `main_solution("dgfv")` 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": "dgfv"}, "ref_output": "epennjngo1", "ref_code": "def main_solution(x):\n    return func_5(func_23('nnjngo', 1), 'epe')", "funcname": "main_solution"}
rule