You are given a code:

def main_solution(x):
    return ('jui' + 'iwgqqw')

Can you predict the output of `main_solution("rhjywvd")` 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": "rhjywvd"}, "ref_output": "juiiwgqqw", "ref_code": "def main_solution(x):\n    return ('jui' + 'iwgqqw')", "funcname": "main_solution"}
rule