You are given a code:

def main_solution(x):
    return func_20(('bjtwa' + 'dddnv'), func_3('csefz'))

Can you predict the output of `main_solution("voejhqei")` 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": "voejhqei"}, "ref_output": "bcjetfwsazdddnv", "ref_code": "def main_solution(x):\n    return func_20(('bjtwa' + 'dddnv'), func_3('csefz'))", "funcname": "main_solution"}
rule