You are given a code:

def main_solution(x):
    return ('xbgwjj' + 'jxsn')

Can you predict the output of `main_solution("tiojngb")` 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": "tiojngb"}, "ref_output": "xbgwjjjxsn", "ref_code": "def main_solution(x):\n    return ('xbgwjj' + 'jxsn')", "funcname": "main_solution"}
rule