You are given a code:

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

Can you predict the output of `main_solution("yazjbunymh")` 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": "yazjbunymh"}, "ref_output": "\u00absyn\u00bbi\u00abjav\u00bbb\u00abbzv\u00bbj\u00abijn\u00bbs\u00abb\u00bb\u00abu\u00bb\u00abn\u00bb\u00aby\u00bb\u00abm\u00bb\u00abh\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15(x), func_9('snijvb'))", "funcname": "main_solution"}
rule