You are given a code:

def main_solution(x):
    return func_20(func_15('mugt'), func_20(x, 'tioy'))

Can you predict the output of `main_solution("pjymyiszhx")` 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": "pjymyiszhx"}, "ref_output": "\u00abpmt\u00bbj\u00abiuy\u00bbo\u00abmgy\u00bby\u00abits\u00bbzhx", "ref_code": "def main_solution(x):\n    return func_20(func_15('mugt'), func_20(x, 'tioy'))", "funcname": "main_solution"}
rule