You are given a code:

def main_solution(x):
    return func_20(func_15('tai'), func_20('ihw', 'gmaas'))

Can you predict the output of `main_solution("yrpyys")` 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": "yrpyys"}, "ref_output": "\u00abitg\u00bbh\u00abmaw\u00bba\u00abais\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15('tai'), func_20('ihw', 'gmaas'))", "funcname": "main_solution"}
rule