You are given a code:

def main_solution(x):
    return func_20(func_15('auexti'), ('uaj' + 'zeyb'))

Can you predict the output of `main_solution("rzmygxijj")` 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": "rzmygxijj"}, "ref_output": "\u00abuaa\u00bbj\u00abzue\u00bby\u00abbe\u00bb\u00abx\u00bb\u00abt\u00bb\u00abi\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15('auexti'), ('uaj' + 'zeyb'))", "funcname": "main_solution"}
rule