You are given a code:

def main_solution(x):
    return (func_15('vwqmmk') + func_5(x, 'yht'))

Can you predict the output of `main_solution("cenfrlixei")` 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": "cenfrlixei"}, "ref_output": "\u00abv\u00bb\u00abw\u00bb\u00abq\u00bb\u00abm\u00bb\u00abm\u00bb\u00abk\u00bbyhtcenfrlixei", "ref_code": "def main_solution(x):\n    return (func_15('vwqmmk') + func_5(x, 'yht'))", "funcname": "main_solution"}
rule