You are given a code:

def main_solution(x):
    return ('kbd' + 'ewqnr')

Can you predict the output of `main_solution("vssyh")` 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": "vssyh"}, "ref_output": "kbdewqnr", "ref_code": "def main_solution(x):\n    return ('kbd' + 'ewqnr')", "funcname": "main_solution"}
rule