You are given a code:

def main_solution(x):
    return func_20(func_15('mno'), func_1('ykijm', 3))

Can you predict the output of `main_solution("cnxf")` 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": "cnxf"}, "ref_output": "\u00abymk\u00bbi\u00abjnm\u00bby\u00abkoi\u00bbjmykijm", "ref_code": "def main_solution(x):\n    return func_20(func_15('mno'), func_1('ykijm', 3))", "funcname": "main_solution"}
rule