You are given a code:

def main_solution(x):
    return ('mwuo' + 'ahhj')

Can you predict the output of `main_solution("ibebnnf")` 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": "ibebnnf"}, "ref_output": "mwuoahhj", "ref_code": "def main_solution(x):\n    return ('mwuo' + 'ahhj')", "funcname": "main_solution"}
rule