You are given a code:

def main_solution(x):
    return func_20(('neda' + 'nea'), func_15(x))

Can you predict the output of `main_solution("uhxqpjdtaf")` 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": "uhxqpjdtaf"}, "ref_output": "n\u00abeud\u00bba\u00abnhe\u00bba\u00abx\u00bb\u00abq\u00bb\u00abp\u00bb\u00abj\u00bb\u00abd\u00bb\u00abt\u00bb\u00aba\u00bb\u00abf\u00bb", "ref_code": "def main_solution(x):\n    return func_20(('neda' + 'nea'), func_15(x))", "funcname": "main_solution"}
rule