You are given a code:

def main_solution(x):
    return ('okg' + x)

Can you predict the output of `main_solution("dnrmxrud")` 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": "dnrmxrud"}, "ref_output": "okgdnrmxrud", "ref_code": "def main_solution(x):\n    return ('okg' + x)", "funcname": "main_solution"}
rule