You are given a code:

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

Can you predict the output of `main_solution("kkyuufcqe")` 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": "kkyuufcqe"}, "ref_output": "\u00abkkk\u00bby\u00abuku\u00bbf\u00abcyq\u00bbe\u00abvue\u00bbb\u00abhug\u00bb\u00abf\u00bb\u00abc\u00bb\u00abq\u00bb\u00abe\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15(x), (x + 'vebhg'))", "funcname": "main_solution"}
rule