You are given a code:

def main_solution(x):
    return func_20(func_20(x, 'xog'), func_15(x))

Can you predict the output of `main_solution("liavruudek")` 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": "liavruudek"}, "ref_output": "l\u00abxli\u00bbo\u00abaig\u00bbv\u00abrau\u00bbu\u00abdve\u00bbk\u00abr\u00bb\u00abu\u00bb\u00abu\u00bb\u00abd\u00bb\u00abe\u00bb\u00abk\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_20(x, 'xog'), func_15(x))", "funcname": "main_solution"}
rule