You are given a code:

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

Can you predict the output of `main_solution("cpytoawalf")` 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": "cpytoawalf"}, "ref_output": "\u00abcnp\u00bby\u00abteo\u00bba\u00abwya\u00bbl\u00abftc\u00bbp\u00abyot\u00bbo\u00abaww\u00bbalfcpytoawalfcpytoawalf", "ref_code": "def main_solution(x):\n    return func_20(func_15('neytow'), func_1(x, 4))", "funcname": "main_solution"}
rule