You are given a code:

def main_solution(x):
    return func_20(func_23('kgzyoo', 1), func_15('fdu'))

Can you predict the output of `main_solution("doau")` 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": "doau"}, "ref_output": "k\u00abgfz\u00bby\u00abodo\u00bb1\u00abu\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_23('kgzyoo', 1), func_15('fdu'))", "funcname": "main_solution"}
rule