You are given a code:

def main_solution(x):
    return func_20((x + x), func_15('ezkpe'))

Can you predict the output of `main_solution("aiavhaikh")` 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": "aiavhaikh"}, "ref_output": "a\u00abiea\u00bbv\u00abhza\u00bbi\u00abkkh\u00bba\u00abipa\u00bbv\u00abhea\u00bbikh", "ref_code": "def main_solution(x):\n    return func_20((x + x), func_15('ezkpe'))", "funcname": "main_solution"}
rule