You are given a code:

def main_solution(x):
    return func_20(func_15('egmmd'), func_9(x))

Can you predict the output of `main_solution("ryvidl")` 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": "ryvidl"}, "ref_output": "\u00abrey\u00bbv\u00abigd\u00bbl\u00ablmd\u00bbi\u00abvmy\u00bbr\u00abd\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15('egmmd'), func_9(x))", "funcname": "main_solution"}
rule