You are given a code:

def main_solution(x):
    return func_20('tab', 'dbow')

Can you predict the output of `main_solution("cjxehfxfc")` 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": "cjxehfxfc"}, "ref_output": "tdabbow", "ref_code": "def main_solution(x):\n    return func_20('tab', 'dbow')", "funcname": "main_solution"}
rule