You are given a code:

def main_solution(x):
    return func_5(func_15('zyaw'), 'doa')

Can you predict the output of `main_solution("hzkgauwa")` 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": "hzkgauwa"}, "ref_output": "doa\u00abz\u00bb\u00aby\u00bb\u00aba\u00bb\u00abw\u00bb", "ref_code": "def main_solution(x):\n    return func_5(func_15('zyaw'), 'doa')", "funcname": "main_solution"}
rule