You are given a code:

def main_solution(x):
    return func_20(func_15(x), (x + 'sztmjj'))

Can you predict the output of `main_solution("hzcshyx")` 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": "hzcshyx"}, "ref_output": "\u00abhhz\u00bbc\u00abszh\u00bby\u00abxcs\u00bbz\u00abtsm\u00bbj\u00abjh\u00bb\u00aby\u00bb\u00abx\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15(x), (x + 'sztmjj'))", "funcname": "main_solution"}
rule