You are given a code:

def main_solution(x):
    return ('mcvhaf' + 'nzjz')

Can you predict the output of `main_solution("aulsydx")` 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": "aulsydx"}, "ref_output": "mcvhafnzjz", "ref_code": "def main_solution(x):\n    return ('mcvhaf' + 'nzjz')", "funcname": "main_solution"}
rule