You are given a code:

def main_solution(x):
    return func_20(func_15('kgpfs'), ('zvhbz' + x))

Can you predict the output of `main_solution("ukkryjuepy")` 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": "ukkryjuepy"}, "ref_output": "\u00abzkv\u00bbh\u00abbgz\u00bbu\u00abkpk\u00bbr\u00abyfj\u00bbu\u00abesp\u00bby", "ref_code": "def main_solution(x):\n    return func_20(func_15('kgpfs'), ('zvhbz' + x))", "funcname": "main_solution"}
rule