You are given a code:

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

Can you predict the output of `main_solution("hltvaeiwv")` 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": "hltvaeiwv"}, "ref_output": "h\u00abltt\u00bbv\u00abape\u00bbi\u00abwov\u00bbv\u00abwmi\u00bbe\u00abaqv\u00bbtlh", "ref_code": "def main_solution(x):\n    return func_20(func_9(x), func_15('tpomq'))", "funcname": "main_solution"}
rule