You are given a code:

def main_solution(x):
    return func_20(func_20('vtfiy', 'bee'), func_15('rir'))

Can you predict the output of `main_solution("sjzqfyzz")` 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": "sjzqfyzz"}, "ref_output": "v\u00abbrt\u00bbe\u00abfie\u00bbi\u00abyr\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_20('vtfiy', 'bee'), func_15('rir'))", "funcname": "main_solution"}
rule