You are given a code:

def main_solution(x):
    return func_20(func_15('rzigb'), func_20('txkk', 'ogn'))

Can you predict the output of `main_solution("hushiyh")` 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": "hushiyh"}, "ref_output": "\u00abtro\u00bbx\u00abgzk\u00bbn\u00abki\u00bb\u00abg\u00bb\u00abb\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15('rzigb'), func_20('txkk', 'ogn'))", "funcname": "main_solution"}
rule