You are given a code:

def main_solution(x):
    return func_20(func_15('ngaf'), func_5(x, 'loh'))

Can you predict the output of `main_solution("xsebfn")` 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": "xsebfn"}, "ref_output": "\u00ablno\u00bbh\u00abxgs\u00bbe\u00abbaf\u00bbn\u00abf\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15('ngaf'), func_5(x, 'loh'))", "funcname": "main_solution"}
rule