You are given a code:

def main_solution(x):
    return func_20(func_9(x), func_15('ulfrpt'))

Can you predict the output of `main_solution("hozxdfb")` 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": "hozxdfb"}, "ref_output": "h\u00abouz\u00bbx\u00abdlf\u00bbb\u00abbff\u00bbd\u00abxrz\u00bbo\u00abhp\u00bb\u00abt\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_9(x), func_15('ulfrpt'))", "funcname": "main_solution"}
rule