You are given a code:

def main_solution(x):
    return func_20(func_15('aigji'), func_23('gmm', 2))

Can you predict the output of `main_solution("hgxxxx")` 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": "hgxxxx"}, "ref_output": "\u00abgam\u00bbm\u00ab1i\u00bb\u00abg\u00bb\u00abj\u00bb\u00abi\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15('aigji'), func_23('gmm', 2))", "funcname": "main_solution"}
rule