You are given a code:

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

Can you predict the output of `main_solution("nxsyfeklp")` 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": "nxsyfeklp"}, "ref_output": "n\u00abxns\u00bby\u00abfye\u00bbk\u00ablqp\u00bbn\u00abxys\u00bbyfeklp", "ref_code": "def main_solution(x):\n    return func_20((x + x), func_15('nyqy'))", "funcname": "main_solution"}
rule