You are given a code:

def main_solution(x):
    return func_20(func_5('waxh', 'vndl'), func_15(x))

Can you predict the output of `main_solution("jvkdv")` 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": "jvkdv"}, "ref_output": "v\u00abnjd\u00bbl\u00abwva\u00bbx\u00abhk\u00bb\u00abd\u00bb\u00abv\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_5('waxh', 'vndl'), func_15(x))", "funcname": "main_solution"}
rule