You are given a code:

def main_solution(x):
    return func_5(func_23('rokdc', 2), 're')

Can you predict the output of `main_solution("rbvo")` 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": "rbvo"}, "ref_output": "rerokdc1", "ref_code": "def main_solution(x):\n    return func_5(func_23('rokdc', 2), 're')", "funcname": "main_solution"}
rule