You are given a code:

def main_solution(x):
    return func_20(func_15('nrfot'), (x + 'kcrjhz'))

Can you predict the output of `main_solution("rweybzmrf")` 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": "rweybzmrf"}, "ref_output": "\u00abrnw\u00bbe\u00abyrb\u00bbz\u00abmfr\u00bbf\u00abkoc\u00bbr\u00abjth\u00bbz", "ref_code": "def main_solution(x):\n    return func_20(func_15('nrfot'), (x + 'kcrjhz'))", "funcname": "main_solution"}
rule