You are given a code:

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

Can you predict the output of `main_solution("evbcuhwgts")` 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": "evbcuhwgts"}, "ref_output": "n\u00abuev\u00bbn\u00abqva\u00bbe\u00abvbb\u00bbc\u00abuch\u00bbw\u00abgut\u00bbs\u00abh\u00bb\u00abw\u00bb\u00abg\u00bb\u00abt\u00bb\u00abs\u00bb", "ref_code": "def main_solution(x):\n    return func_20(('nuvnqa' + x), func_15(x))", "funcname": "main_solution"}
rule