You are given a code:

def main_solution(x):
    return func_20(func_20(x, x), func_15('evlsi'))

Can you predict the output of `main_solution("xaojnbzjvg")` 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": "xaojnbzjvg"}, "ref_output": "x\u00abxea\u00bba\u00abovo\u00bbj\u00abjln\u00bbn\u00abbsb\u00bbz\u00abzij\u00bbjvvgg", "ref_code": "def main_solution(x):\n    return func_20(func_20(x, x), func_15('evlsi'))", "funcname": "main_solution"}
rule