You are given a code:

def main_solution(x):
    return ('bvx' + 'xoht')

Can you predict the output of `main_solution("sklakjxve")` 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": "sklakjxve"}, "ref_output": "bvxxoht", "ref_code": "def main_solution(x):\n    return ('bvx' + 'xoht')", "funcname": "main_solution"}
rule