You are given a code:

def main_solution(x):
    return ('cra' + 'eythkn')

Can you predict the output of `main_solution("auerqw")` 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": "auerqw"}, "ref_output": "craeythkn", "ref_code": "def main_solution(x):\n    return ('cra' + 'eythkn')", "funcname": "main_solution"}
rule