You are given a code:

def main_solution(x):
    return ('brdfc' + 'obekv')

Can you predict the output of `main_solution("kouqj")` 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": "kouqj"}, "ref_output": "brdfcobekv", "ref_code": "def main_solution(x):\n    return ('brdfc' + 'obekv')", "funcname": "main_solution"}
rule