You are given a code:

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

Can you predict the output of `main_solution("nyeap")` 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": "nyeap"}, "ref_output": "z\u00abvne\u00bby\u00abqya\u00bbn\u00abyee\u00bba\u00abpa\u00bb\u00abp\u00bb", "ref_code": "def main_solution(x):\n    return func_20(('zveyqa' + x), func_15(x))", "funcname": "main_solution"}
rule