You are given a code:

def main_solution(x):
    return func_20(func_15('odzte'), func_1('gpnrc', 4))

Can you predict the output of `main_solution("cfonckys")` 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": "cfonckys"}, "ref_output": "\u00abgop\u00bbn\u00abrdc\u00bbg\u00abpzn\u00bbr\u00abctg\u00bbp\u00abner\u00bbcgpnrc", "ref_code": "def main_solution(x):\n    return func_20(func_15('odzte'), func_1('gpnrc', 4))", "funcname": "main_solution"}
rule