You are given a code:

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

Can you predict the output of `main_solution("hdblecqljs")` 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": "hdblecqljs"}, "ref_output": "h\u00abdbb\u00bbl\u00abetc\u00bbq\u00ablnj\u00bbs\u00absyj\u00bbl\u00abqmc\u00bbe\u00ablob\u00bbdh", "ref_code": "def main_solution(x):\n    return func_20(func_9(x), func_15('btnymo'))", "funcname": "main_solution"}
rule