You are given a code:

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

Can you predict the output of `main_solution("yeqcc")` 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": "yeqcc"}, "ref_output": "\u00abayx\u00bbz\u00abjei\u00bbj\u00abjqi\u00bbj\u00abzcx\u00bba\u00abc\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15(x), func_9('axzjij'))", "funcname": "main_solution"}
rule