You are given a code:

def main_solution(x):
    return func_20(func_5('cit', 'exn'), func_15('ggn'))

Can you predict the output of `main_solution("copef")` 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": "copef"}, "ref_output": "e\u00abxgn\u00bbc\u00abigt\u00bb\u00abn\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_5('cit', 'exn'), func_15('ggn'))", "funcname": "main_solution"}
rule