You are given a code:

def main_solution(x):
    return func_20(func_17(x), func_15('ebya'))

Can you predict the output of `main_solution("bbzmtqjxj")` 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": "bbzmtqjxj"}, "ref_output": "j\u00abxej\u00bbq\u00abtbm\u00bbz\u00abbyb\u00bb\u00aba\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_17(x), func_15('ebya'))", "funcname": "main_solution"}
rule