You are given a code:

def main_solution(x):
    return func_20(func_23(x, 3), func_15('dwtfda'))

Can you predict the output of `main_solution("mehnymamoi")` 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": "mehnymamoi"}, "ref_output": "m\u00abedh\u00bbn\u00abywm\u00bba\u00abmto\u00bbi\u00ab1f\u00bb\u00abd\u00bb\u00aba\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_23(x, 3), func_15('dwtfda'))", "funcname": "main_solution"}
rule