You are given a code:

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

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