You are given a code:

def main_solution(x):
    return func_20('jhcneo', 'gxie')

Can you predict the output of `main_solution("dmfeo")` 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": "dmfeo"}, "ref_output": "jghxcineeo", "ref_code": "def main_solution(x):\n    return func_20('jhcneo', 'gxie')", "funcname": "main_solution"}
rule