You are given a code:

def main_solution(x):
    return func_20(func_5('pvaab', 'qlhg'), func_23('olh', 2))

Can you predict the output of `main_solution("efdefildum")` 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": "efdefildum"}, "ref_output": "qollhhg1pvaab", "ref_code": "def main_solution(x):\n    return func_20(func_5('pvaab', 'qlhg'), func_23('olh', 2))", "funcname": "main_solution"}
rule