You are given a code:

def main_solution(x):
    return func_20(func_15('wmugg'), func_20('jsfqzr', 'ysoz'))

Can you predict the output of `main_solution("wvkbar")` 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": "wvkbar"}, "ref_output": "\u00abjwy\u00bbs\u00absmf\u00bbo\u00abquz\u00bbz\u00abrg\u00bb\u00abg\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15('wmugg'), func_20('jsfqzr', 'ysoz'))", "funcname": "main_solution"}
rule