You are given a code:

def main_solution(x):
    return func_20(func_15('zlfeo'), ('qsntgb' + 'mkkq'))

Can you predict the output of `main_solution("hzyytbdx")` 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": "hzyytbdx"}, "ref_output": "\u00abqzs\u00bbn\u00abtlg\u00bbb\u00abmfk\u00bbk\u00abqe\u00bb\u00abo\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15('zlfeo'), ('qsntgb' + 'mkkq'))", "funcname": "main_solution"}
rule